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Loans and Allowance for Credit Losses - Summary of Loans by Risk Category and Past Due Status (Details) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
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Loans and Allowance for Credit Losses |  |
Current Year | $ 869,328,000 | $ 786,753,000
One Year Before | 1,088,269,000 | 739,912,000
Two Years Before | 635,600,000 | 604,077,000
Three Years Before | 466,871,000 | 531,179,000
Four Years Before | 361,539,000 | 346,578,000
Prior | 916,519,000 | 825,610,000
Revolving Loans | 243,255,000 | 243,873,000
Total | 4,581,381,000 | 4,077,982,000
FDIC-acquired Loans and Remaining Accretable yield |  | 429,000
Satisfactory |  |
Loans and Allowance for Credit Losses |  |
Current Year | 869,328,000 | 786,753,000
One Year Before | 1,088,230,000 | 739,500,000
Two Years Before | 635,433,000 | 603,351,000
Three Years Before | 466,685,000 | 531,011,000
Four Years Before | 361,449,000 | 346,492,000
Prior | 884,255,000 | 792,592,000
Revolving Loans | 242,085,000 | 242,877,000
Total | 4,547,465,000 | 4,042,576,000
Watch |  |
Loans and Allowance for Credit Losses |  |
One Year Before | 28,000 | 410,000
Two Years Before |  | 582,000
Three Years Before | 186,000 | 152,000
Four Years Before | 88,000 | 4,000
Prior | 28,211,000 | 29,494,000
Revolving Loans | 157,000 | 98,000
Total | 28,670,000 | 30,740,000
Classified |  |
Loans and Allowance for Credit Losses |  |
One Year Before | 11,000 | 2,000
Two Years Before | 167,000 | 144,000
Three Years Before |  | 16,000
Four Years Before | 2,000 | 82,000
Prior | 4,053,000 | 3,524,000
Revolving Loans | 1,013,000 | 898,000
Total | 5,246,000 | 4,666,000
Commercial real estate |  |
Loans and Allowance for Credit Losses |  |
Current Year | 221,341,000 | 141,868,000
One Year Before | 171,484,000 | 113,636,000
Two Years Before | 109,939,000 | 221,162,000
Three Years Before | 203,426,000 | 231,321,000
Four Years Before | 185,682,000 | 196,166,000
Prior | 602,133,000 | 549,293,000
Revolving Loans | 36,658,000 | 22,785,000
Total | 1,530,663,000 | 1,476,231,000
Commercial real estate | Satisfactory |  |
Loans and Allowance for Credit Losses |  |
Current Year | 221,341,000 | 141,868,000
One Year Before | 171,484,000 | 113,226,000
Two Years Before | 109,939,000 | 220,580,000
Three Years Before | 203,426,000 | 231,321,000
Four Years Before | 185,682,000 | 196,166,000
Prior | 577,216,000 | 521,545,000
Revolving Loans | 36,658,000 | 22,785,000
Total | 1,505,746,000 | 1,447,491,000
Commercial real estate | Watch |  |
Loans and Allowance for Credit Losses |  |
One Year Before |  | 410,000
Two Years Before |  | 582,000
Prior | 23,338,000 | 25,742,000
Total | 23,338,000 | 26,734,000
Commercial real estate | Classified |  |
Loans and Allowance for Credit Losses |  |
Prior | 1,579,000 | 2,006,000
Total | 1,579,000 | 2,006,000
Customer |  |
Loans and Allowance for Credit Losses |  |
Current Year | 21,309,000 | 20,140,000
One Year Before | 11,207,000 | 11,140,000
Two Years Before | 5,720,000 | 7,154,000
Three Years Before | 2,715,000 | 9,101,000
Four Years Before | 3,265,000 | 4,211,000
Prior | 16,788,000 | 24,570,000
Revolving Loans | 133,251,000 | 130,487,000
Total | 194,255,000 | 206,803,000
Customer | Satisfactory |  |
Loans and Allowance for Credit Losses |  |
Current Year | 21,309,000 | 20,140,000
One Year Before | 11,168,000 | 11,138,000
Two Years Before | 5,711,000 | 7,154,000
Three Years Before | 2,708,000 | 9,065,000
Four Years Before | 3,263,000 | 4,175,000
Prior | 16,380,000 | 24,280,000
Revolving Loans | 132,792,000 | 130,111,000
Total | 193,331,000 | 206,063,000
Customer | Watch |  |
Loans and Allowance for Credit Losses |  |
One Year Before | 28,000 |
Three Years Before | 7,000 | 20,000
Four Years Before |  | 4,000
Prior | 160,000 | 10,000
Revolving Loans | 100,000 | 29,000
Total | 295,000 | 63,000
Customer | Classified |  |
Loans and Allowance for Credit Losses |  |
One Year Before | 11,000 | 2,000
Two Years Before | 9,000 |
Three Years Before |  | 16,000
Four Years Before | 2,000 | 32,000
Prior | 248,000 | 280,000
Revolving Loans | 359,000 | 347,000
Total | 629,000 | 677,000
One- to four-family construction |  |
Loans and Allowance for Credit Losses |  |
Current Year | 21,885,000 | 23,081,000
One Year Before | 7,265,000 | 4,453,000
Two Years Before | 1,391,000 | 763,000
Prior |  | 5,000
Revolving Loans | 3,308,000 |
Total | 33,849,000 | 28,302,000
One- to four-family construction | Satisfactory |  |
Loans and Allowance for Credit Losses |  |
Current Year | 21,885,000 | 23,081,000
One Year Before | 7,265,000 | 4,453,000
Two Years Before | 1,391,000 | 763,000
Prior |  | 5,000
Revolving Loans | 3,308,000 |
Total | 33,849,000 | 28,302,000
Subdivision construction |  |
Loans and Allowance for Credit Losses |  |
Current Year | 4,478,000 | 24,129,000
One Year Before | 25,864,000 | 949,000
Two Years Before | 800,000 | 224,000
Three Years Before | 203,000 | 160,000
Four Years Before | 134,000 | 252,000
Prior | 588,000 | 980,000
Total | 32,067,000 | 26,694,000
Subdivision construction | Satisfactory |  |
Loans and Allowance for Credit Losses |  |
Current Year | 4,478,000 | 24,129,000
One Year Before | 25,864,000 | 949,000
Two Years Before | 800,000 | 224,000
Three Years Before | 203,000 | 160,000
Four Years Before | 134,000 | 252,000
Prior | 588,000 | 965,000
Total | 32,067,000 | 26,679,000
Subdivision construction | Classified |  |
Loans and Allowance for Credit Losses |  |
Prior |  | 15,000
Total |  | 15,000
Construction and land development |  |
Loans and Allowance for Credit Losses |  |
Current Year | 16,746,000 | 9,968,000
One Year Before | 6,914,000 | 15,965,000
Two Years Before | 4,866,000 | 11,115,000
Three Years Before | 7,338,000 | 2,591,000
Four Years Before | 762,000 | 3,013,000
Prior | 3,990,000 | 4,184,000
Revolving Loans | 997,000 | 995,000
Total | 41,613,000 | 47,831,000
Construction and land development | Satisfactory |  |
Loans and Allowance for Credit Losses |  |
Current Year | 16,746,000 | 9,968,000
One Year Before | 6,914,000 | 15,965,000
Two Years Before | 4,866,000 | 11,115,000
Three Years Before | 7,338,000 | 2,591,000
Four Years Before | 762,000 | 3,013,000
Prior | 3,990,000 | 4,184,000
Revolving Loans | 613,000 | 527,000
Total | 41,229,000 | 47,363,000
Construction and land development | Classified |  |
Loans and Allowance for Credit Losses |  |
Revolving Loans | 384,000 | 468,000
Total | 384,000 | 468,000
Other Construction |  |
Loans and Allowance for Credit Losses |  |
Current Year | 113,512,000 | 145,991,000
One Year Before | 446,125,000 | 298,710,000
Two Years Before | 176,340,000 | 130,502,000
Three Years Before | 21,713,000 | 42,302,000
Total | 757,690,000 | 617,505,000
Other Construction | Satisfactory |  |
Loans and Allowance for Credit Losses |  |
Current Year | 113,512,000 | 145,991,000
One Year Before | 446,125,000 | 298,710,000
Two Years Before | 176,340,000 | 130,502,000
Three Years Before | 21,713,000 | 42,302,000
Total | 757,690,000 | 617,505,000
One- to four-family residential |  |
Loans and Allowance for Credit Losses |  |
Current Year | 340,886,000 | 237,498,000
One Year Before | 219,504,000 | 169,765,000
Two Years Before | 128,667,000 | 93,792,000
Three Years Before | 73,341,000 | 49,750,000
Four Years Before | 39,773,000 | 14,757,000
Prior | 100,409,000 | 114,549,000
Revolving Loans | 823,000 | 1,814,000
Total | 903,403,000 | 681,925,000
One- to four-family residential | Satisfactory |  |
Loans and Allowance for Credit Losses |  |
Current Year | 340,886,000 | 237,498,000
One Year Before | 219,504,000 | 169,765,000
Two Years Before | 128,509,000 | 93,648,000
Three Years Before | 73,162,000 | 49,618,000
Four Years Before | 39,685,000 | 14,707,000
Prior | 97,236,000 | 113,059,000
Revolving Loans | 687,000 | 1,662,000
Total | 899,669,000 | 679,957,000
One- to four-family residential | Watch |  |
Loans and Allowance for Credit Losses |  |
Three Years Before | 179,000 | 132,000
Four Years Before | 88,000 |
Prior | 1,341,000 | 267,000
Revolving Loans | 57,000 | 69,000
Total | 1,665,000 | 468,000
One- to four-family residential | Classified |  |
Loans and Allowance for Credit Losses |  |
Two Years Before | 158,000 | 144,000
Four Years Before |  | 50,000
Prior | 1,832,000 | 1,223,000
Revolving Loans | 79,000 | 83,000
Total | 2,069,000 | 1,500,000
Other residential |  |
Loans and Allowance for Credit Losses |  |
Current Year | 83,822,000 | 117,029,000
One Year Before | 133,648,000 | 96,551,000
Two Years Before | 168,232,000 | 115,418,000
Three Years Before | 142,630,000 | 179,441,000
Four Years Before | 122,614,000 | 104,053,000
Prior | 126,876,000 | 73,855,000
Revolving Loans | 3,939,000 | 11,605,000
Total | 781,761,000 | 697,952,000
Other residential | Satisfactory |  |
Loans and Allowance for Credit Losses |  |
Current Year | 83,822,000 | 117,029,000
One Year Before | 133,648,000 | 96,551,000
Two Years Before | 168,232,000 | 115,418,000
Three Years Before | 142,630,000 | 179,441,000
Four Years Before | 122,614,000 | 104,053,000
Prior | 123,538,000 | 70,438,000
Revolving Loans | 3,939,000 | 11,605,000
Total | 778,423,000 | 694,535,000
Other residential | Watch |  |
Loans and Allowance for Credit Losses |  |
Prior | 3,338,000 | 3,417,000
Total | 3,338,000 | 3,417,000
Commercial business |  |
Loans and Allowance for Credit Losses |  |
Current Year | 45,349,000 | 67,049,000
One Year Before | 66,258,000 | 28,743,000
Two Years Before | 39,645,000 | 23,947,000
Three Years Before | 15,505,000 | 16,513,000
Four Years Before | 9,309,000 | 24,126,000
Prior | 65,735,000 | 58,174,000
Revolving Loans | 64,279,000 | 76,187,000
Total | 306,080,000 | 294,739,000
Commercial business | Satisfactory |  |
Loans and Allowance for Credit Losses |  |
Current Year | 45,349,000 | 67,049,000
One Year Before | 66,258,000 | 28,743,000
Two Years Before | 39,645,000 | 23,947,000
Three Years Before | 15,505,000 | 16,513,000
Four Years Before | 9,309,000 | 24,126,000
Prior | 65,307,000 | 58,116,000
Revolving Loans | 64,088,000 | 76,187,000
Total | 305,461,000 | 294,681,000
Commercial business | Watch |  |
Loans and Allowance for Credit Losses |  |
Prior | 34,000 | 58,000
Total | 34,000 | $ 58,000
Commercial business | Classified |  |
Loans and Allowance for Credit Losses |  |
Prior | 394,000 |
Revolving Loans | 191,000 |
Total | $ 585,000 |

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