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Loans Held for Investment and Allowance for Credit Losses on Loans - Gross Loans Held for Investment by Year of Origination and Internally Assigned Credit Grades (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Financing Receivable Recorded Investment [Line Items] |  |
2020 | $ 2,637,796 |
2019 | 1,034,907 |
2018 | 618,426 |
2017 | 418,683 |
2016 | 327,103 |
Prior | 598,412 |
Revolving Loans Amortized Cost Basis | 759,179 |
Total Loans | 6,394,506 | $ 5,662,143
Grade 1 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total Loans |  | 4,462,594
Grade 2 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total Loans |  | 1,081,074
Grade 3 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total Loans |  | 96,850
Grade 4 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total Loans |  | 21,344
Grade 5 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total Loans |  | 281
Pegasus Bank [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 128,941 |
2019 | 93,608 |
2018 | 34,009 |
2017 | 42,392 |
2016 | 16,236 |
Prior | 50,867 |
Revolving Loans Amortized Cost Basis | 188,495 |
Total Loans | 554,548 | 430,705
Pegasus Bank [Member] | Grade 1 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 100,631 |
2019 | 66,875 |
2018 | 27,235 |
2017 | 19,025 |
2016 | 12,414 |
Prior | 44,237 |
Revolving Loans Amortized Cost Basis | 113,824 |
Total Loans | 384,241 | 295,243
Pegasus Bank [Member] | Grade 2 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 28,187 |
2019 | 26,733 |
2018 | 6,774 |
2017 | 23,367 |
2016 | 3,822 |
Prior | 5,300 |
Revolving Loans Amortized Cost Basis | 74,671 |
Total Loans | 168,854 | 133,324
Pegasus Bank [Member] | Grade 3 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 123 |
Prior | 1,330 |
Total Loans | 1,453 | 1,287
Pegasus Bank [Member] | Grade 4 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total Loans |  | 851
Real Estate [Member] | Pegasus Bank [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total Loans | 272,000 |
Real Estate [Member] | Farmland [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 70,643 |
2019 | 57,379 |
2018 | 29,842 |
2017 | 21,563 |
2016 | 19,174 |
Prior | 36,790 |
Revolving Loans Amortized Cost Basis | 17,567 |
Total Loans | 252,958 | 246,988
Real Estate [Member] | Farmland [Member] | Grade 1 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 51,284 |
2019 | 26,391 |
2018 | 18,994 |
2017 | 13,821 |
2016 | 13,368 |
Prior | 27,100 |
Revolving Loans Amortized Cost Basis | 8,160 |
Total Loans | 159,118 |
Real Estate [Member] | Farmland [Member] | Grade 2 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 15,264 |
2019 | 30,684 |
2018 | 6,639 |
2017 | 6,391 |
2016 | 4,763 |
Prior | 8,916 |
Revolving Loans Amortized Cost Basis | 7,140 |
Total Loans | 79,797 |
Real Estate [Member] | Farmland [Member] | Grade 3 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 3,681 |
2019 | 290 |
2018 | 151 |
2017 | 1,055 |
2016 | 703 |
Prior | 551 |
Revolving Loans Amortized Cost Basis | 1,955 |
Total Loans | 8,386 |
Real Estate [Member] | Farmland [Member] | Grade 4 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 414 |
2019 | 14 |
2018 | 4,058 |
2017 | 296 |
2016 | 340 |
Prior | 223 |
Revolving Loans Amortized Cost Basis | 312 |
Total Loans | 5,657 |
Real Estate [Member] | Commercial Real Estate Owner Occupied [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 189,212 |
2019 | 122,905 |
2018 | 86,436 |
2017 | 52,637 |
2016 | 51,923 |
Prior | 117,021 |
Revolving Loans Amortized Cost Basis | 21,853 |
Total Loans | 641,987 | 621,188
Real Estate [Member] | Commercial Real Estate Owner Occupied [Member] | Grade 1 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 142,574 |
2019 | 91,493 |
2018 | 73,845 |
2017 | 42,289 |
2016 | 37,097 |
Prior | 88,724 |
Revolving Loans Amortized Cost Basis | 17,153 |
Total Loans | 493,175 |
Real Estate [Member] | Commercial Real Estate Owner Occupied [Member] | Grade 2 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 42,375 |
2019 | 31,314 |
2018 | 11,516 |
2017 | 9,644 |
2016 | 13,316 |
Prior | 25,574 |
Revolving Loans Amortized Cost Basis | 4,393 |
Total Loans | 138,132 |
Real Estate [Member] | Commercial Real Estate Owner Occupied [Member] | Grade 3 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 4,226 |
2019 | 32 |
2018 | 333 |
2017 | 704 |
2016 | 1,259 |
Prior | 2,671 |
Total Loans | 9,225 |
Real Estate [Member] | Commercial Real Estate Owner Occupied [Member] | Grade 4 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 37 |
2019 | 66 |
2018 | 742 |
2016 | 251 |
Prior | 52 |
Revolving Loans Amortized Cost Basis | 307 |
Total Loans | 1,455 |
Real Estate [Member] | Commercial Real Estate Non-Owner Occupied [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 329,172 |
2019 | 209,503 |
2018 | 110,782 |
2017 | 89,871 |
2016 | 90,883 |
Prior | 123,138 |
Revolving Loans Amortized Cost Basis | 17,809 |
Total Loans | 971,158 | 851,200
Real Estate [Member] | Commercial Real Estate Non-Owner Occupied [Member] | Grade 1 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 256,128 |
2019 | 157,526 |
2018 | 83,869 |
2017 | 69,864 |
2016 | 82,088 |
Prior | 81,499 |
Revolving Loans Amortized Cost Basis | 13,206 |
Total Loans | 744,180 |
Real Estate [Member] | Commercial Real Estate Non-Owner Occupied [Member] | Grade 2 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 60,607 |
2019 | 48,751 |
2018 | 26,441 |
2017 | 18,070 |
2016 | 8,755 |
Prior | 41,491 |
Revolving Loans Amortized Cost Basis | 4,454 |
Total Loans | 208,569 |
Real Estate [Member] | Commercial Real Estate Non-Owner Occupied [Member] | Grade 3 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 7,718 |
2019 | 3,137 |
2018 | 472 |
2017 | 1,937 |
2016 | 40 |
Prior | 148 |
Revolving Loans Amortized Cost Basis | 149 |
Total Loans | 13,601 |
Real Estate [Member] | Commercial Real Estate Non-Owner Occupied [Member] | Grade 4 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 4,719 |
2019 | 89 |
Total Loans | 4,808 |
Real Estate [Member] | Construction and Development Less than 60 Months [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 130,769 |
2019 | 66,435 |
2018 | 14,428 |
2017 | 5,368 |
2016 | 1,595 |
Prior | 2,588 |
Revolving Loans Amortized Cost Basis | 8,432 |
Total Loans | 229,615 | 287,138
Real Estate [Member] | Construction and Development Less than 60 Months [Member] | Grade 1 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 115,399 |
2019 | 56,369 |
2018 | 12,821 |
2017 | 4,582 |
2016 | 1,438 |
Prior | 2,048 |
Revolving Loans Amortized Cost Basis | 7,850 |
Total Loans | 200,507 |
Real Estate [Member] | Construction and Development Less than 60 Months [Member] | Grade 2 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 11,528 |
2019 | 10,002 |
2018 | 1,589 |
2017 | 764 |
2016 | 157 |
Prior | 540 |
Revolving Loans Amortized Cost Basis | 582 |
Total Loans | 25,162 |
Real Estate [Member] | Construction and Development Less than 60 Months [Member] | Grade 3 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 3,842 |
2018 | 9 |
Total Loans | 3,851 |
Real Estate [Member] | Construction and Development Less than 60 Months [Member] | Grade 4 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2019 | 64 |
2018 | 9 |
2017 | 22 |
Total Loans | 95 |
Real Estate [Member] | Construction Residential Real Estate Less than 60 Months [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 188,716 |
2019 | 4,914 |
2018 | 181 |
2017 | 21 |
2016 | 33 |
Prior | 491 |
Revolving Loans Amortized Cost Basis | 11,839 |
Total Loans | 206,195 | 189,480
Real Estate [Member] | Construction Residential Real Estate Less than 60 Months [Member] | Grade 1 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 159,431 |
2019 | 4,214 |
2018 | 69 |
2017 | 21 |
2016 | 33 |
Prior | 23 |
Revolving Loans Amortized Cost Basis | 11,449 |
Total Loans | 175,240 |
Real Estate [Member] | Construction Residential Real Estate Less than 60 Months [Member] | Grade 2 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 27,400 |
2019 | 580 |
2018 | 112 |
Prior | 468 |
Revolving Loans Amortized Cost Basis | 390 |
Total Loans | 28,950 |
Real Estate [Member] | Construction Residential Real Estate Less than 60 Months [Member] | Grade 3 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 1,885 |
2019 | 120 |
Total Loans | 2,005 |
Real Estate [Member] | Residential Real Estate First Lien [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 273,560 |
2019 | 156,371 |
2018 | 104,388 |
2017 | 78,341 |
2016 | 63,501 |
Prior | 177,155 |
Total Loans | 853,316 | 834,849
Real Estate [Member] | Residential Real Estate First Lien [Member] | Grade 1 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 241,771 |
2019 | 134,184 |
2018 | 80,793 |
2017 | 64,392 |
2016 | 48,686 |
Prior | 136,059 |
Total Loans | 705,885 |
Real Estate [Member] | Residential Real Estate First Lien [Member] | Grade 2 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 28,305 |
2019 | 19,425 |
2018 | 21,742 |
2017 | 11,666 |
2016 | 12,365 |
Prior | 34,312 |
Total Loans | 127,815 |
Real Estate [Member] | Residential Real Estate First Lien [Member] | Grade 3 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 2,754 |
2019 | 2,029 |
2018 | 1,375 |
2017 | 2,073 |
2016 | 1,213 |
Prior | 5,194 |
Total Loans | 14,638 |
Real Estate [Member] | Residential Real Estate First Lien [Member] | Grade 4 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 730 |
2019 | 733 |
2018 | 478 |
2017 | 210 |
2016 | 1,186 |
Prior | 1,590 |
Total Loans | 4,927 |
Real Estate [Member] | Residential Real Estate First Lien [Member] | Grade 5 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2016 | 51 |
Total Loans | 51 |
Real Estate [Member] | Residential Real Estate All Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 25,775 |
2019 | 16,297 |
2018 | 13,020 |
2017 | 8,255 |
2016 | 5,984 |
Prior | 14,255 |
Revolving Loans Amortized Cost Basis | 84,495 |
Total Loans | 168,081 | 187,647
Real Estate [Member] | Residential Real Estate All Other [Member] | Grade 1 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 21,493 |
2019 | 13,944 |
2018 | 10,854 |
2017 | 6,265 |
2016 | 5,381 |
Prior | 10,984 |
Revolving Loans Amortized Cost Basis | 28,047 |
Total Loans | 96,968 |
Real Estate [Member] | Residential Real Estate All Other [Member] | Grade 2 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 3,694 |
2019 | 1,675 |
2018 | 1,268 |
2017 | 1,809 |
2016 | 450 |
Prior | 2,335 |
Revolving Loans Amortized Cost Basis | 55,433 |
Total Loans | 66,664 |
Real Estate [Member] | Residential Real Estate All Other [Member] | Grade 3 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 384 |
2019 | 461 |
2018 | 328 |
2017 | 116 |
2016 | 119 |
Prior | 221 |
Revolving Loans Amortized Cost Basis | 993 |
Total Loans | 2,622 |
Real Estate [Member] | Residential Real Estate All Other [Member] | Grade 4 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 204 |
2019 | 217 |
2018 | 570 |
2017 | 65 |
2016 | 34 |
Prior | 715 |
Revolving Loans Amortized Cost Basis | 22 |
Total Loans | 1,827 |
Commercial and Agricultural Non-Real Estate [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 288,006 |
2019 | 174,031 |
2018 | 154,014 |
2017 | 82,315 |
2016 | 54,917 |
Prior | 56,671 |
Revolving Loans Amortized Cost Basis | 349,856 |
Total Loans | 1,159,810 | 1,315,005
Commercial and Agricultural Non-Real Estate [Member] | Grade 1 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 206,515 |
2019 | 136,254 |
2018 | 124,657 |
2017 | 74,719 |
2016 | 46,453 |
Prior | 33,471 |
Revolving Loans Amortized Cost Basis | 270,426 |
Total Loans | 892,495 |
Commercial and Agricultural Non-Real Estate [Member] | Grade 2 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 49,467 |
2019 | 34,659 |
2018 | 27,239 |
2017 | 6,566 |
2016 | 7,054 |
Prior | 22,710 |
Revolving Loans Amortized Cost Basis | 63,894 |
Total Loans | 211,589 |
Commercial and Agricultural Non-Real Estate [Member] | Grade 3 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 24,793 |
2019 | 1,511 |
2018 | 1,466 |
2017 | 789 |
2016 | 271 |
Prior | 327 |
Revolving Loans Amortized Cost Basis | 14,577 |
Total Loans | 43,734 |
Commercial and Agricultural Non-Real Estate [Member] | Grade 4 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 7,231 |
2019 | 1,607 |
2018 | 652 |
2017 | 241 |
2016 | 1,139 |
Prior | 163 |
Revolving Loans Amortized Cost Basis | 959 |
Total Loans | 11,992 |
Consumer Non-real Estate [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 180,241 |
2019 | 100,261 |
2018 | 45,442 |
2017 | 14,222 |
2016 | 5,092 |
Prior | 2,137 |
Revolving Loans Amortized Cost Basis | 8,010 |
Total Loans | 355,405 | 359,529
Consumer Non-real Estate [Member] | Grade 1 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 166,934 |
2019 | 93,232 |
2018 | 41,449 |
2017 | 13,157 |
2016 | 4,471 |
Prior | 1,768 |
Revolving Loans Amortized Cost Basis | 7,673 |
Total Loans | 328,684 |
Consumer Non-real Estate [Member] | Grade 2 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 12,773 |
2019 | 5,902 |
2018 | 3,399 |
2017 | 796 |
2016 | 499 |
Prior | 266 |
Revolving Loans Amortized Cost Basis | 328 |
Total Loans | 23,963 |
Consumer Non-real Estate [Member] | Grade 3 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 445 |
2019 | 840 |
2018 | 450 |
2017 | 175 |
2016 | 75 |
Prior | 63 |
Revolving Loans Amortized Cost Basis | 2 |
Total Loans | 2,050 |
Consumer Non-real Estate [Member] | Grade 4 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 89 |
2019 | 287 |
2018 | 144 |
2017 | 94 |
2016 | 47 |
Prior | 40 |
Revolving Loans Amortized Cost Basis | 7 |
Total Loans | 708 |
Oil and Gas [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 147,335 |
2019 | 811 |
2018 | 82 |
Prior | 4,679 |
Revolving Loans Amortized Cost Basis | 26,448 |
Total Loans | 179,355 | 184,399
Oil and Gas [Member] | Grade 1 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 104,622 |
2019 | 66 |
2018 | 82 |
Prior | 4,679 |
Revolving Loans Amortized Cost Basis | 16,529 |
Total Loans | 125,978 |
Oil and Gas [Member] | Grade 2 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 42,713 |
2019 | 745 |
Revolving Loans Amortized Cost Basis | 9,919 |
Total Loans | 53,377 |
Other Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 685,426 |
2019 | 32,392 |
2018 | 25,802 |
2017 | 23,698 |
2016 | 17,765 |
Prior | 12,620 |
Revolving Loans Amortized Cost Basis | 24,375 |
Total Loans | 822,078 | 154,015
Other Loans [Member] | Grade 1 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2020 | 685,426 |
2019 | 32,392 |
2018 | 25,707 |
2017 | 20,638 |
2016 | 16,378 |
Prior | 10,341 |
Revolving Loans Amortized Cost Basis | 22,976 |
Total Loans | 813,858 | 148,692
Other Loans [Member] | Grade 2 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2018 | 17 |
2017 | 2,936 |
2016 | 1,126 |
Prior | 2,179 |
Revolving Loans Amortized Cost Basis | 692 |
Total Loans | 6,950 | 3,631
Other Loans [Member] | Grade 3 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2018 | 78 |
2016 | 53 |
Prior | 67 |
Revolving Loans Amortized Cost Basis | 36 |
Total Loans | 234 | 1,564
Other Loans [Member] | Grade 4 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
2017 | 124 |
2016 | 208 |
Prior | 33 |
Revolving Loans Amortized Cost Basis | 671 |
Total Loans | $ 1,036 | $ 128

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- Definition Amount of financing receivable originated three years prior to current fiscal year. + 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 http://asc.fasb.org/extlink&oid=121647567&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 http://asc.fasb.org/extlink&oid=121599337&loc=SL82919232-210447 + Details
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- Definition Amount of financing receivable originated two years prior to current fiscal year. + 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 http://asc.fasb.org/extlink&oid=121647567&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 http://asc.fasb.org/extlink&oid=121599337&loc=SL82919232-210447 + Details
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- Definition Amount 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 http://asc.fasb.org/extlink&oid=121599337&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 http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448 + Details
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