XML 67 R58.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Allowance for Credit Losses and Allowance for Unfunded Commitments and Letters of Credit (Analysis of Credit Quality of the Loan Portfolio) (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Jun. 30, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | --- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 1,848,505 |  | $ 2,745,438 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 2,479,519 |  | 1,490,732 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,301,636 |  | 1,201,138 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 1,037,293 |  | 854,212 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 708,420 |  | 798,466 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,995,703 |  | 1,751,150 |  |  |
Financing Receivable, Revolving | 2,294,462 |  | 1,748,587 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 26,723 |  | 52,214 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 11,692,261 |  | 10,641,937 |  |  |
Financing Receivable, Allowance for Credit Loss | 154,871 | $ 149,935 | 155,578 | $ 142,785 | $ 142,988 | $ 149,140
Loans, net | 11,537,390 |  | 10,486,359 |  |  |
Commercial Real Estate [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 983,823 |  | 1,074,864 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,031,206 |  | 766,442 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 699,078 |  | 715,378 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 657,485 |  | 507,656 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 435,840 |  | 545,313 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,483,455 |  | 1,289,984 |  |  |
Financing Receivable, Revolving | 75,232 |  | 75,783 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 8,932 |  | 5,843 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 5,375,051 |  | 4,981,263 |  |  |
Financing Receivable, Allowance for Credit Loss | 57,381 | 57,119 | 61,254 | 51,752 | 53,250 | 68,934
Commercial Real Estate [Member] | Pass [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 983,823 |  | 1,068,493 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,021,822 |  | 760,545 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 688,119 |  | 650,593 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 603,943 |  | 492,348 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 431,582 |  | 515,233 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,402,281 |  | 1,180,115 |  |  |
Financing Receivable, Revolving | 71,235 |  | 74,754 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 8,932 |  | 3,644 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 5,211,737 |  | 4,745,725 |  |  |
Commercial Real Estate [Member] | Special Mention [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |  | 2,252 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,865 |  | 0 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 3,566 |  | 19,016 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 19,591 |  | 6,196 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |  | 163 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 11,763 |  | 27,270 |  |  |
Financing Receivable, Revolving | 0 |  | 0 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 0 |  | 2,199 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 36,785 |  | 57,096 |  |  |
Commercial Real Estate [Member] | Substandard [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |  | 4,119 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 7,519 |  | 5,897 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 7,393 |  | 45,769 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 33,951 |  | 9,112 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 4,258 |  | 29,917 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 69,411 |  | 82,599 |  |  |
Financing Receivable, Revolving | 3,997 |  | 1,029 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 0 |  | 0 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 126,529 |  | 178,442 |  |  |
Commercial Business [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 439,306 |  | 896,907 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 727,114 |  | 430,749 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 369,448 |  | 305,313 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 248,838 |  | 246,418 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 202,809 |  | 165,036 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 301,999 |  | 259,869 |  |  |
Financing Receivable, Revolving | 1,485,879 |  | 1,081,668 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 8,303 |  | 37,308 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 3,783,696 |  | 3,423,268 |  |  |
Financing Receivable, Allowance for Credit Loss | 54,085 | 51,985 | 54,712 | 55,561 | 57,554 | 45,250
Commercial Business [Member] | Pass [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 436,851 |  | 891,957 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 713,165 |  | 426,004 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 364,061 |  | 280,823 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 224,851 |  | 217,605 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 180,781 |  | 144,363 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 272,401 |  | 232,356 |  |  |
Financing Receivable, Revolving | 1,413,129 |  | 1,028,616 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 6,807 |  | 35,411 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 3,612,046 |  | 3,257,135 |  |  |
Commercial Business [Member] | Special Mention [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 2,362 |  | 621 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 10,652 |  | 135 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,564 |  | 6,097 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 6,588 |  | 747 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 392 |  | 105 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 653 |  | 51 |  |  |
Financing Receivable, Revolving | 28,105 |  | 34,256 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 425 |  | 236 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 50,741 |  | 42,248 |  |  |
Commercial Business [Member] | Substandard [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 93 |  | 4,329 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 3,297 |  | 4,610 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 3,823 |  | 18,393 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 17,399 |  | 28,066 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 21,636 |  | 20,568 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 28,945 |  | 27,462 |  |  |
Financing Receivable, Revolving | 44,645 |  | 18,796 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 1,071 |  | 1,661 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 120,909 |  | 123,885 |  |  |
Agriculture [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 114,516 |  | 147,723 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 130,916 |  | 95,681 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 77,697 |  | 84,251 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 74,406 |  | 31,355 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 24,264 |  | 51,590 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 105,071 |  | 81,526 |  |  |
Financing Receivable, Revolving | 375,230 |  | 296,263 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 1,160 |  | 7,326 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 903,260 |  | 795,715 |  |  |
Financing Receivable, Allowance for Credit Loss | 9,433 | 8,895 | 8,148 | 8,965 | 7,920 | 9,052
Agriculture [Member] | Pass [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 113,968 |  | 147,561 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 129,433 |  | 87,964 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 72,571 |  | 74,658 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 69,576 |  | 29,739 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 24,244 |  | 46,058 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 103,310 |  | 79,693 |  |  |
Financing Receivable, Revolving | 346,565 |  | 266,573 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 1,160 |  | 5,448 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 860,827 |  | 737,694 |  |  |
Agriculture [Member] | Special Mention [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |  | 162 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 140 |  | 0 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |  | 445 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 4,306 |  | 0 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |  | 0 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |  | 0 |  |  |
Financing Receivable, Revolving | 899 |  | 565 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 0 |  | 0 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 5,345 |  | 1,172 |  |  |
Agriculture [Member] | Substandard [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 548 |  | 0 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,343 |  | 7,717 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 5,126 |  | 9,148 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 524 |  | 1,616 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 20 |  | 5,532 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,761 |  | 1,833 |  |  |
Financing Receivable, Revolving | 27,766 |  | 29,125 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 0 |  | 1,878 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 37,088 |  | 56,849 |  |  |
Construction [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 176,863 |  | 228,661 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 222,701 |  | 53,880 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 27,571 |  | 37,543 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 15,842 |  | 3,183 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 3,066 |  | 3,285 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 3,516 |  | 2,438 |  |  |
Financing Receivable, Revolving | 55,628 |  | 55,765 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 7,121 |  | 0 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 512,308 |  | 384,755 |  |  |
Financing Receivable, Allowance for Credit Loss | 8,147 | 5,914 | 5,397 | 6,367 | 6,559 | 7,636
Construction [Member] | Pass [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 176,863 |  | 228,661 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 221,956 |  | 53,880 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 27,571 |  | 35,795 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 14,115 |  | 3,183 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 2,618 |  | 3,285 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 3,466 |  | 2,189 |  |  |
Financing Receivable, Revolving | 55,628 |  | 55,765 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 7,121 |  | 0 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 509,338 |  | 382,758 |  |  |
Construction [Member] | Special Mention [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |  |  |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 745 |  |  |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |  |  |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |  |  |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |  |  |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |  |  |  |  |
Financing Receivable, Revolving | 0 |  |  |  |  |
Financing Receivable, Revolving Converted to Term Loans | 0 |  |  |  |  |
Loans and Leases Receivable, Net of Deferred Income | 745 |  |  |  |  |
Construction [Member] | Substandard [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |  | 0 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |  | 0 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |  | 1,748 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 1,727 |  | 0 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 448 |  | 0 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 50 |  | 249 |  |  |
Financing Receivable, Revolving | 0 |  | 0 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 0 |  | 0 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 2,225 |  | 1,997 |  |  |
One-to-Four Family Residential [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 126,882 |  | 390,238 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 364,441 |  | 141,269 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 126,363 |  | 56,703 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 39,728 |  | 52,111 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 40,862 |  | 32,681 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 92,683 |  | 116,043 |  |  |
Financing Receivable, Revolving | 279,163 |  | 223,232 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 1,100 |  | 1,631 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 1,071,222 |  | 1,013,908 |  |  |
Financing Receivable, Allowance for Credit Loss | 24,014 | 24,626 | 24,123 | 18,855 | 16,519 | 16,875
One-to-Four Family Residential [Member] | Pass [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 126,882 |  | 390,153 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 364,441 |  | 140,799 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 126,287 |  | 56,520 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 39,728 |  | 51,549 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 40,319 |  | 32,447 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 91,542 |  | 111,307 |  |  |
Financing Receivable, Revolving | 278,903 |  | 222,747 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 856 |  | 1,347 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 1,068,958 |  | 1,006,869 |  |  |
One-to-Four Family Residential [Member] | Substandard [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |  | 85 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |  | 470 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 76 |  | 183 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |  | 562 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 543 |  | 234 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,141 |  | 4,736 |  |  |
Financing Receivable, Revolving | 260 |  | 485 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 244 |  | 284 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 2,264 |  | 7,039 |  |  |
Consumer Loan [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 7,115 |  | 7,045 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 3,141 |  | 2,711 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,479 |  | 1,950 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 994 |  | 13,489 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,579 |  | 561 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 8,979 |  | 1,290 |  |  |
Financing Receivable, Revolving | 23,330 |  | 15,876 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 107 |  | 106 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 46,724 |  | 43,028 |  |  |
Financing Receivable, Allowance for Credit Loss | 1,811 | $ 1,396 | 1,944 | $ 1,285 | $ 1,186 | $ 1,393
Consumer Loan [Member] | Pass [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 7,115 |  | 7,045 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 3,121 |  | 2,711 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,479 |  | 1,950 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 994 |  | 13,489 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,579 |  | 560 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 8,969 |  | 1,277 |  |  |
Financing Receivable, Revolving | 23,328 |  | 15,853 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 107 |  | 97 |  |  |
Loans and Leases Receivable, Net of Deferred Income | 46,692 |  | 42,982 |  |  |
Consumer Loan [Member] | Substandard [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |  | 0 |  |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 20 |  | 0 |  |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |  | 0 |  |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |  | 0 |  |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |  | 1 |  |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 10 |  | 13 |  |  |
Financing Receivable, Revolving | 2 |  | 23 |  |  |
Financing Receivable, Revolving Converted to Term Loans | 0 |  | 9 |  |  |
Loans and Leases Receivable, Net of Deferred Income | $ 32 |  | $ 46 |  |  |

X
- Definition Financing Receivable, Revolving Converted to Term Loans + References No definition available. + Details
Name: | colb_FinancingReceivableRevolvingConvertedtoTermLoans
Namespace Prefix: | colb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (c) Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (1) + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 + Details
Name: | us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 + Details
Name: | us-gaap_FinancingReceivableRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524 + Details
Name: | us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
Name: | us-gaap_LoansAndLeasesReceivableNetReportedAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=colb_CommercialBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=colb_AgricultureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=colb_OneToFourFamilyResidentialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |