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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Loans Classified by Aging Analysis (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Financial Asset, 30 to 59 Days Past Due | Commercial Real Estate |  |
Financing Receivables, By Class | $ 302 |
Financial Asset, 30 to 59 Days Past Due | Industrial revenue bonds |  |
Financing Receivables, By Class | 944 |
Financial Asset, 30 to 59 Days Past Due | Consumer auto |  |
Financing Receivables, By Class | 145 | $ 364
Financial Asset, 30 to 59 Days Past Due | Home Equity Line of Credit |  |
Financing Receivables, By Class | 40 | 153
Financial Asset, 30 to 59 Days Past Due | Land development |  |
Financing Receivables, By Class | 14 | 20
Financial Asset, 30 to 59 Days Past Due | One- to four-family residential construction |  |
Financing Receivables, By Class | 249 | 1,365
Financial Asset, 30 to 59 Days Past Due | Owner occupied one- to four-family residential |  |
Financing Receivables, By Class | 2,017 | 1,379
Financial Asset, 30 to 59 Days Past Due | Commercial business |  |
Financing Receivables, By Class | 83 |
Financial Asset, 30 to 59 Days Past Due | Consumer |  |
Financing Receivables, By Class | 117 | 443
Financial Asset, 30 to 59 Days Past Due | Acquired Loans Net of Discount |  |
Financing Receivables, By Class |  | 1,662
Financial Asset, 30 to 59 Days Past Due | Less Acquired Loans Net of Discount |  |
Financing Receivables, By Class | 2,133 | 1,662
Financial Asset, 30 to 59 Days Past Due | Loans Receivable, Gross |  |
Financing Receivables, By Class | 3,911 | 5,386
Financial Asset, 30 to 59 Days Past Due | Loans Receivable |  |
Financing Receivables, By Class | 1,778 | 3,724
Financial Asset, 60 to 89 Days Past Due | Commercial Real Estate |  |
Financing Receivables, By Class |  | 79
Financial Asset, 60 to 89 Days Past Due | Consumer auto |  |
Financing Receivables, By Class | 30 | 119
Financial Asset, 60 to 89 Days Past Due | Home Equity Line of Credit |  |
Financing Receivables, By Class | 63 | 111
Financial Asset, 60 to 89 Days Past Due | Owner occupied one- to four-family residential |  |
Financing Receivables, By Class | 252 | 113
Financial Asset, 60 to 89 Days Past Due | Consumer |  |
Financing Receivables, By Class | 25 | 7
Financial Asset, 60 to 89 Days Past Due | Acquired Loans Net of Discount |  |
Financing Receivables, By Class |  | 641
Financial Asset, 60 to 89 Days Past Due | Less Acquired Loans Net of Discount |  |
Financing Receivables, By Class | 109 | 641
Financial Asset, 60 to 89 Days Past Due | Loans Receivable, Gross |  |
Financing Receivables, By Class | 370 | 1,070
Financial Asset, 60 to 89 Days Past Due | Loans Receivable |  |
Financing Receivables, By Class | 261 | 429
Financial Asset, Equal to or Greater than 90 Days Past Due | Commercial Real Estate |  |
Financing Receivables, By Class | 3,394 | 587
Financial Asset, Equal to or Greater than 90 Days Past Due | Consumer auto |  |
Financing Receivables, By Class | 106 | 169
Financial Asset, Equal to or Greater than 90 Days Past Due | Home Equity Line of Credit |  |
Financing Receivables, By Class | 810 | 508
Financial Asset, Equal to or Greater than 90 Days Past Due | Land development |  |
Financing Receivables, By Class | 622 |
Financial Asset, Equal to or Greater than 90 Days Past Due | Owner occupied one- to four-family residential |  |
Financing Receivables, By Class | 4,111 | 1,502
Financial Asset, Equal to or Greater than 90 Days Past Due | Non-owner occupied one- to four-family residential |  |
Financing Receivables, By Class | 112 | 69
Financial Asset, Equal to or Greater than 90 Days Past Due | Other residential |  |
Financing Receivables, By Class | 185 |
Financial Asset, Equal to or Greater than 90 Days Past Due | Commercial business |  |
Financing Receivables, By Class | 106 | 114
Financial Asset, Equal to or Greater than 90 Days Past Due | Consumer |  |
Financing Receivables, By Class | 100 | 94
Financial Asset, Equal to or Greater than 90 Days Past Due | Acquired Loans Net of Discount |  |
Financing Receivables, By Class |  | 3,843
Financial Asset, Equal to or Greater than 90 Days Past Due | Less Acquired Loans Net of Discount |  |
Financing Receivables, By Class | 3,576 | 3,843
Financial Asset, Equal to or Greater than 90 Days Past Due | Loans Receivable, Gross |  |
Financing Receivables, By Class | 9,546 | 6,886
Financial Asset, Equal to or Greater than 90 Days Past Due | Loans Receivable |  |
Financing Receivables, By Class | 5,970 | 3,043
Financing Receivables Past Due | Commercial Real Estate |  |
Financing Receivables, By Class | 3,696 | 666
Financing Receivables Past Due | Industrial revenue bonds |  |
Financing Receivables, By Class | 944 |
Financing Receivables Past Due | Consumer auto |  |
Financing Receivables, By Class | 281 | 652
Financing Receivables Past Due | Home Equity Line of Credit |  |
Financing Receivables, By Class | 913 | 772
Financing Receivables Past Due | Land development |  |
Financing Receivables, By Class | 636 | 20
Financing Receivables Past Due | One- to four-family residential construction |  |
Financing Receivables, By Class | 249 | 1,365
Financing Receivables Past Due | Owner occupied one- to four-family residential |  |
Financing Receivables, By Class | 6,380 | 2,994
Financing Receivables Past Due | Non-owner occupied one- to four-family residential |  |
Financing Receivables, By Class | 112 | 69
Financing Receivables Past Due | Other residential |  |
Financing Receivables, By Class | 185 |
Financing Receivables Past Due | Commercial business |  |
Financing Receivables, By Class | 189 | 114
Financing Receivables Past Due | Consumer |  |
Financing Receivables, By Class | 242 | 544
Financing Receivables Past Due | Acquired Loans Net of Discount |  |
Financing Receivables, By Class |  | 6,146
Financing Receivables Past Due | Less Acquired Loans Net of Discount |  |
Financing Receivables, By Class | 5,818 | 6,146
Financing Receivables Past Due | Loans Receivable, Gross |  |
Financing Receivables, By Class | 13,827 | 13,342
Financing Receivables Past Due | Loans Receivable |  |
Financing Receivables, By Class | 8,009 | 7,196
Financing Receivables Current | Commercial construction |  |
Financing Receivables, By Class | 1,206,687 | 1,212,837
Financing Receivables Current | Commercial Real Estate |  |
Financing Receivables, By Class | 1,585,075 | 1,553,011
Financing Receivables Current | Industrial revenue bonds |  |
Financing Receivables, By Class | 13,615 | 14,003
Financing Receivables Current | Consumer auto |  |
Financing Receivables, By Class | 73,370 | 85,521
Financing Receivables Current | Home Equity Line of Credit |  |
Financing Receivables, By Class | 112,881 | 113,917
Financing Receivables Current | Land development |  |
Financing Receivables, By Class | 53,954 | 53,990
Financing Receivables Current | One- to four-family residential construction |  |
Financing Receivables, By Class | 47,912 | 41,428
Financing Receivables Current | Subdivision construction |  |
Financing Receivables, By Class | 7,297 | 30,894
Financing Receivables Current | Owner occupied one- to four-family residential |  |
Financing Receivables, By Class | 503,963 | 467,442
Financing Receivables Current | Non-owner occupied one- to four-family residential |  |
Financing Receivables, By Class | 130,497 | 114,500
Financing Receivables Current | Other residential |  |
Financing Receivables, By Class | 1,055,210 | 1,021,145
Financing Receivables Current | Commercial business |  |
Financing Receivables, By Class | 372,344 | 370,784
Financing Receivables Current | Consumer |  |
Financing Receivables, By Class | 39,482 | 40,218
Financing Receivables Current | Acquired Loans Net of Discount |  |
Financing Receivables, By Class |  | 92,497
Financing Receivables Current | Less Acquired Loans Net of Discount |  |
Financing Receivables, By Class | 86,116 | 92,497
Financing Receivables Current | Loans Receivable, Gross |  |
Financing Receivables, By Class | 5,202,287 | 5,212,187
Financing Receivables Current | Loans Receivable |  |
Financing Receivables, By Class | 5,116,171 | 5,119,690
Financing Receivables Total | Commercial construction |  |
Financing Receivables, By Class | 1,206,687 | 1,212,837
Financing Receivables Total | Commercial Real Estate |  |
Financing Receivables, By Class | 1,588,771 | 1,553,677
Financing Receivables Total | Industrial revenue bonds |  |
Financing Receivables, By Class | 14,559 | 14,003
Financing Receivables Total | Consumer auto |  |
Financing Receivables, By Class | 73,651 | 86,173
Financing Receivables Total | Home Equity Line of Credit |  |
Financing Receivables, By Class | 113,794 | 114,689
Financing Receivables Total | Land development |  |
Financing Receivables, By Class | 54,590 | 54,010
Financing Receivables Total | One- to four-family residential construction |  |
Financing Receivables, By Class | 48,161 | 42,793
Financing Receivables Total | Subdivision construction |  |
Financing Receivables, By Class | 7,297 | 30,894
Financing Receivables Total | Owner occupied one- to four-family residential |  |
Financing Receivables, By Class | 510,343 | 470,436
Financing Receivables Total | Non-owner occupied one- to four-family residential |  |
Financing Receivables, By Class | 130,609 | 114,569
Financing Receivables Total | Other residential |  |
Financing Receivables, By Class | 1,055,395 | 1,021,145
Financing Receivables Total | Commercial business |  |
Financing Receivables, By Class | 372,533 | 370,898
Financing Receivables Total | Consumer |  |
Financing Receivables, By Class | 39,724 | 40,762
Financing Receivables Total | Acquired Loans Net of Discount |  |
Financing Receivables, By Class |  | 98,643
Financing Receivables Total | Less Acquired Loans Net of Discount |  |
Financing Receivables, By Class | 91,934 | 98,643
Financing Receivables Total | Loans Receivable, Gross |  |
Financing Receivables, By Class | 5,216,114 | 5,225,529
Financing Receivables Total | Loans Receivable |  |
Financing Receivables, By Class | $ 5,124,180 | $ 5,126,886

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