XML 77 R61.htm IDEA: XBRL DOCUMENT
v3.25.4

Note 3 - Loans - Loans by Credit Quality Indicators, Loans Type and Year of Origination (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Financing Receivable, Year One, Originated, Current Fiscal Year | $ 2,656,842 | $ 2,097,309 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 2,001,949 | 949,482 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 791,953 | 3,180,556 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 2,465,635 | 2,084,516 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,673,340 | 876,327 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 2,051,270 | 1,648,596 |
Financing Receivable, Revolving | 2,016,035 | 1,767,754 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 39,888 | 1,296 |
Total loans | 13,696,912 | 12,605,836 |
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff | 0 | 55 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 3,478 | 1,038 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 669 | 61 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 6,830 | 214 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 1,972 | 675 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff | 2,616 | 4,668 |
Financing Receivable, Revolving, Writeoff | 15,278 | 3,801 |
Financing Receivable, Revolving, Converted to Term Loan, Writeoff | 323 | 3,172 |
Financing Receivable, Allowance for Credit Loss, Writeoff | 31,166 | 13,684 | $ 14,581
Performing Financial Instruments [Member] |  |  |
Total loans | 13,528,083 | 12,563,370 |
Nonperforming Financial Instruments [Member] |  |  |
Total loans | 168,829 | 42,466 |
Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 686,323 | 531,833 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 330,381 | 172,982 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 121,789 | 346,772 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 223,633 | 284,296 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 188,662 | 123,977 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 259,612 | 239,145 |
Financing Receivable, Revolving | 1,305,306 | 1,170,641 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 31,030 | 248 |
Total loans | 3,146,736 | 2,869,894 |
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff | 0 | 36 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 0 | 1,002 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 669 | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 5,667 | 52 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 1,925 | 675 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff | 1,442 | 4,327 |
Financing Receivable, Revolving, Writeoff | 14,878 | 2,851 |
Financing Receivable, Revolving, Converted to Term Loan, Writeoff | 323 | 3,172 |
Financing Receivable, Allowance for Credit Loss, Writeoff | 24,904 | 12,115 |
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member] |  |  |
Total loans | 3,119,879 | 2,844,164 |
Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |  |  |
Total loans | 26,857 | 25,730 |
Real Estate Portfolio Segment[Member] |  |  |
Total loans | 9,014,925 | 8,173,009 |
Financing Receivable, Allowance for Credit Loss, Writeoff | 5,509 | 998 | 171
Real Estate Portfolio Segment[Member] | Construction Loans [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 468,553 | 367,535 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 403,059 | 296,069 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 192,125 | 536,766 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 201,412 | 166,784 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 81,984 | 32,330 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 28,335 | 17,029 |
Financing Receivable, Revolving | 82,160 | 72,793 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 1,457,628 | 1,489,306 |
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff | 0 | 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 0 | 0 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 0 | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 46 | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 0 | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff | 0 | 0 |
Financing Receivable, Revolving, Writeoff | 0 | 0 |
Financing Receivable, Revolving, Converted to Term Loan, Writeoff | 0 | 0 |
Financing Receivable, Allowance for Credit Loss, Writeoff | 46 | (0) | 108
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 475,395 | 391,061 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 374,241 | 175,388 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 162,317 | 508,757 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 444,917 | 496,558 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 434,606 | 284,484 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 763,475 | 619,863 |
Financing Receivable, Revolving | 82,475 | 70,230 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 2,397 | 802 |
Total loans | 2,739,823 | 2,547,143 |
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff | 0 | 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 3,478 | 0 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 0 | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 0 | 100 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 0 | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff | 560 | 137 |
Financing Receivable, Revolving, Writeoff | 0 | 0 |
Financing Receivable, Revolving, Converted to Term Loan, Writeoff | 0 | 0 |
Financing Receivable, Allowance for Credit Loss, Writeoff | 4,038 | 237 | 117
Real Estate Portfolio Segment[Member] | One to Four Family [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 324,028 | 294,602 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 238,022 | 127,687 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 105,561 | 322,641 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 279,643 | 191,902 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 172,535 | 67,202 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 118,807 | 86,040 |
Financing Receivable, Revolving | 428,933 | 354,549 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 4,184 | 0 |
Total loans | 1,671,713 | 1,444,623 |
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff | 0 | 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 0 | 28 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 0 | 61 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 0 | 62 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 0 | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff | 37 | 129 |
Financing Receivable, Revolving, Writeoff | 266 | 481 |
Financing Receivable, Revolving, Converted to Term Loan, Writeoff | 0 | 0 |
Financing Receivable, Allowance for Credit Loss, Writeoff | 303 | 761 | 54
Real Estate Portfolio Segment[Member] | Non-owner Occupied Commercial [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 673,189 | 479,275 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 652,662 | 174,415 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 208,583 | 1,463,158 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 1,314,421 | 943,630 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 794,936 | 367,100 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 878,190 | 683,258 |
Financing Receivable, Revolving | 79,131 | 70,161 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 2,277 | 246 |
Total loans | 4,603,389 | 4,181,243 |
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff | 0 |  |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 0 |  |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 0 |  |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 1,117 |  |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 47 |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff | 4 |  |
Financing Receivable, Revolving, Writeoff | 0 |  |
Financing Receivable, Revolving, Converted to Term Loan, Writeoff | 0 |  |
Financing Receivable, Allowance for Credit Loss, Writeoff | 1,168 | (0) | (0)
Real Estate Portfolio Segment[Member] | Other Mortgages [Member] |  |  |
Total loans |  | 8,173,009 |
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff |  | 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff |  | 0 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff |  | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff |  | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff |  | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff |  | 0 |
Financing Receivable, Revolving, Writeoff |  | 0 |
Financing Receivable, Revolving, Converted to Term Loan, Writeoff |  | 0 |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | 0 |
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] |  |  |
Total loans | 8,909,607 | 8,157,715 |
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | Construction Loans [Member] |  |  |
Total loans | 1,421,743 | 1,488,645 |
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | Owner Occupied Commercial [Member] |  |  |
Total loans | 2,726,245 | 2,538,399 |
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | One to Four Family [Member] |  |  |
Total loans | 1,661,950 | 1,439,332 |
Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | Non-owner Occupied Commercial [Member] |  |  |
Total loans | 4,521,412 | 4,179,984 |
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] |  |  |
Total loans | 105,318 | 15,294 |
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | Construction Loans [Member] |  |  |
Total loans | 35,885 | 661 |
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | Owner Occupied Commercial [Member] |  |  |
Total loans | 13,578 | 8,744 |
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | One to Four Family [Member] |  |  |
Total loans | 9,763 | 5,291 |
Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | Non-owner Occupied Commercial [Member] |  |  |
Total loans | 81,977 | 1,259 |
Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 29,354 | 33,004 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 3,584 | 2,941 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,578 | 2,462 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 1,609 | 1,346 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 617 | 1,234 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 2,851 | 3,260 |
Financing Receivable, Revolving | 38,030 | 29,380 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 77,623 | 73,627 |
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff | 0 | 19 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 0 | 8 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 0 | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 0 | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 0 | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff | 573 | 75 |
Financing Receivable, Revolving, Writeoff | 134 | 469 |
Financing Receivable, Revolving, Converted to Term Loan, Writeoff | 0 | 0 |
Financing Receivable, Allowance for Credit Loss, Writeoff | 707 | 571 | $ 1,073
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member] |  |  |
Total loans | 76,854 | 72,846 |
Consumer Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |  |  |
Total loans | 769 | 781 |
Pass [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 2,648,546 | 2,080,509 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,982,821 | 936,388 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 783,248 | 3,113,189 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 2,414,250 | 1,969,680 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,554,064 | 863,220 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,978,961 | 1,557,340 |
Financing Receivable, Revolving | 1,968,207 | 1,709,994 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 34,340 | 1,296 |
Total loans | 13,364,437 | 12,231,616 |
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 682,117 | 529,002 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 327,516 | 171,139 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 120,889 | 331,476 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 219,978 | 273,304 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 186,839 | 120,088 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 219,843 | 195,011 |
Financing Receivable, Revolving | 1,267,362 | 1,121,196 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 25,570 | 248 |
Total loans | 3,050,114 | 2,741,464 |
Pass [Member] | Real Estate Portfolio Segment[Member] | Construction Loans [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 468,553 | 367,276 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 396,658 | 292,379 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 188,617 | 506,542 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 185,466 | 150,307 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 65,552 | 32,330 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 26,911 | 16,083 |
Financing Receivable, Revolving | 82,009 | 72,793 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 1,413,766 | 1,437,710 |
Pass [Member] | Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 471,700 | 377,351 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 369,455 | 168,561 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 158,561 | 503,351 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 439,521 | 467,790 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 420,902 | 276,795 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 741,250 | 594,794 |
Financing Receivable, Revolving | 78,331 | 65,269 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 2,397 | 802 |
Total loans | 2,682,117 | 2,454,713 |
Pass [Member] | Real Estate Portfolio Segment[Member] | One to Four Family [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 323,633 | 294,602 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 236,761 | 126,953 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 105,279 | 319,472 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 274,544 | 188,104 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 168,885 | 65,673 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 115,994 | 78,629 |
Financing Receivable, Revolving | 423,365 | 351,240 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 4,096 | 0 |
Total loans | 1,652,557 | 1,424,673 |
Pass [Member] | Real Estate Portfolio Segment[Member] | Non-owner Occupied Commercial [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 673,189 | 479,275 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 648,847 | 174,415 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 208,324 | 1,449,886 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 1,293,147 | 888,829 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 711,292 | 367,100 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 872,833 | 670,317 |
Financing Receivable, Revolving | 79,131 | 70,161 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 2,277 | 246 |
Total loans | 4,489,040 | 4,100,229 |
Pass [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 29,354 | 33,004 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 3,584 | 2,941 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,578 | 2,462 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 1,594 | 1,346 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 594 | 1,234 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 2,130 | 2,505 |
Financing Receivable, Revolving | 38,009 | 29,335 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 76,843 | 72,827 |
Special Mention [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 7,776 | 12,174 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 13,274 | 10,645 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 2,450 | 52,684 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 3,490 | 97,875 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 36,857 | 9,819 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 24,797 | 36,917 |
Financing Receivable, Revolving | 28,073 | 29,081 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 4,564 | 0 |
Total loans | 121,281 | 249,195 |
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 4,206 | 1,767 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,927 | 666 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 231 | 12,260 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 2,716 | 2,442 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,822 | 3,254 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 6,878 | 10,001 |
Financing Receivable, Revolving | 20,423 | 21,647 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 4,564 | 0 |
Total loans | 42,767 | 52,037 |
Special Mention [Member] | Real Estate Portfolio Segment[Member] | Construction Loans [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 | 259 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 6,401 | 3,100 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 | 28,224 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | 16,477 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 479 | 0 |
Financing Receivable, Revolving | 150 | 0 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 7,030 | 48,060 |
Special Mention [Member] | Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 3,570 | 10,148 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 4,786 | 6,410 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,787 | 1,373 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 394 | 22,087 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 7,252 | 5,441 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 16,043 | 16,912 |
Financing Receivable, Revolving | 2,794 | 4,961 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 36,626 | 67,332 |
Special Mention [Member] | Real Estate Portfolio Segment[Member] | One to Four Family [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 | 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 160 | 469 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 173 | 2,523 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 40 | 2,943 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 2,681 | 1,124 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,397 | 6,628 |
Financing Receivable, Revolving | 4,685 | 2,428 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 9,136 | 16,115 |
Special Mention [Member] | Real Estate Portfolio Segment[Member] | Non-owner Occupied Commercial [Member] |  |  |
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 | 259 | 8,304 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 340 | 53,926 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 25,079 | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | 3,376 |
Financing Receivable, Revolving | 0 | 0 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 25,678 | 65,606 |
Special Mention [Member] | Consumer Portfolio Segment [Member] |  |  |
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 | 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 | 23 | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | 0 |
Financing Receivable, Revolving | 21 | 45 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 44 | 45 |
Substandard [Member] | Performing Financial Instruments [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 125 | 4,626 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 53 | 1,007 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,552 | 8,718 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 3,790 | 7,030 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 864 | 2,533 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 33,202 | 38,912 |
Financing Receivable, Revolving | 3,257 | 22,698 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 42,843 | 85,524 |
Substandard [Member] | Nonperforming Financial Instruments [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 395 | 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 5,801 | 1,442 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 4,703 | 5,965 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 44,105 | 9,931 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 81,555 | 755 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 14,310 | 15,427 |
Financing Receivable, Revolving | 16,498 | 5,981 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 984 | 0 |
Total loans | 168,351 | 39,501 |
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 | 1,064 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 53 | 0 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 | 987 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 603 | 349 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year |  | 364 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 24,715 | 25,620 |
Financing Receivable, Revolving | 1,728 | 22,317 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 27,099 | 50,701 |
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Net | 0 |  |
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 | 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 885 | 1,177 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 669 | 2,049 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 336 | 8,201 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1 | 271 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 8,176 | 8,513 |
Financing Receivable, Revolving | 15,793 | 5,481 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 896 | 0 |
Total loans | 26,756 | 25,692 |
Substandard [Member] | Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 | 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 | 590 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 | 2,000 |
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 | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 945 | 946 |
Financing Receivable, Revolving | 1 | 0 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 946 | 3,536 |
Substandard [Member] | Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | Owner Occupied Commercial [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 125 | 3,562 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 | 417 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,552 | 1,147 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 | 6,681 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 | 2,169 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 4,476 | 2,378 |
Financing Receivable, Revolving | 1,350 | 0 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 7,503 | 16,354 |
Substandard [Member] | Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | One to Four Family [Member] |  |  |
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 | 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 | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 402 | 403 |
Financing Receivable, Revolving | 178 | 381 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 580 | 784 |
Substandard [Member] | Real Estate Portfolio Segment[Member] | Performing Financial Instruments [Member] | Non-owner Occupied Commercial [Member] |  |  |
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 | 4,584 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 3,187 | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 864 | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 2,643 | 9,565 |
Financing Receivable, Revolving | 0 | 0 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 6,694 | 14,149 |
Substandard [Member] | Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | Construction Loans [Member] |  |  |
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 | 3,508 | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 15,946 | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 16,432 | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 | 0 |
Financing Receivable, Revolving | 0 | 0 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 35,886 | 0 |
Substandard [Member] | Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | Owner Occupied Commercial [Member] |  |  |
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 | 417 | 2,886 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 5,002 | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 6,452 | 79 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,706 | 5,779 |
Financing Receivable, Revolving | 0 | 0 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 13,577 | 8,744 |
Substandard [Member] | Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | One to Four Family [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 395 | 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,101 | 265 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 109 | 646 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 5,059 | 855 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 969 | 405 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,014 | 380 |
Financing Receivable, Revolving | 705 | 500 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 88 | 0 |
Total loans | 9,440 | 3,051 |
Substandard [Member] | Real Estate Portfolio Segment[Member] | Nonperforming Financial Instruments [Member] | Non-owner Occupied Commercial [Member] |  |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 | 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 3,815 | 0 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 | 384 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 17,747 | 875 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 57,701 | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 2,714 | 0 |
Financing Receivable, Revolving | 0 | 0 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 81,977 | 1,259 |
Substandard [Member] | Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member] |  |  |
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 | 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 | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 21 | 0 |
Financing Receivable, Revolving | 0 | 0 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | 21 | 0 |
Substandard [Member] | Consumer Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |  |  |
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 | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 15 | 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 | 700 | 755 |
Financing Receivable, Revolving | 0 | 0 |
Financing Receivable, Revolving, Converted to Term Loan During Period | 0 | 0 |
Total loans | $ 715 | $ 755 |

X
- Definition Net amortized cost excluding accrued interest, of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease. + References No definition available. + Details
Name: | sfbs_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearNet
Namespace Prefix: | sfbs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, 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 -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of revolving financing receivable converted to term loan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of revolving financing receivable converted to term loan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6A + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, 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 -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated four years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, 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 -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated three years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, 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 -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated two years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest 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/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated in fiscal year before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_PerformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_NonperformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=sfbs_RealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
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: |