Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001137547-20-000026-index-headers.html | 2020-07-31 16:33:21 | |
| 0001137547-20-000026-index.html | 2020-07-31 16:33:21 | |
| 0001137547-20-000026.txt | 2020-07-31 16:33:21 | |
 0001137547-20-000026-xbrl.zip | 468131 | 2020-07-31 16:33:21 |
| FilingSummary.xml | 40407 | 2020-07-31 16:33:21 |
| Financial_Report.xlsx | 122880 | 2020-07-31 16:33:21 |
| MetaLinks.json | 731986 | 2020-07-31 16:33:21 |
| R1.htm | 47269 | 2020-07-31 16:33:21 |
| R10.htm | 132097 | 2020-07-31 16:33:21 |
| R11.htm | 1297507 | 2020-07-31 16:33:21 |
| R12.htm | 76626 | 2020-07-31 16:33:21 |
| R13.htm | 23235 | 2020-07-31 16:33:21 |
| R14.htm | 8123 | 2020-07-31 16:33:21 |
| R15.htm | 33638 | 2020-07-31 16:33:21 |
| R16.htm | 24364 | 2020-07-31 16:33:21 |
| R17.htm | 6862 | 2020-07-31 16:33:21 |
| R18.htm | 39301 | 2020-07-31 16:33:21 |
| R19.htm | 9047 | 2020-07-31 16:33:21 |
| R2.htm | 94230 | 2020-07-31 16:33:21 |
| R20.htm | 10817 | 2020-07-31 16:33:21 |
| R21.htm | 288319 | 2020-07-31 16:33:21 |
| R22.htm | 4746 | 2020-07-31 16:33:21 |
| R23.htm | 33693 | 2020-07-31 16:33:21 |
| R24.htm | 6703 | 2020-07-31 16:33:21 |
| R25.htm | 6219 | 2020-07-31 16:33:21 |
| R26.htm | 7306 | 2020-07-31 16:33:21 |
| R27.htm | 128021 | 2020-07-31 16:33:21 |
| R28.htm | 1280604 | 2020-07-31 16:33:21 |
| R29.htm | 250595 | 2020-07-31 16:33:21 |
| R3.htm | 10748 | 2020-07-31 16:33:21 |
| R30.htm | 21833 | 2020-07-31 16:33:21 |
| R31.htm | 35054 | 2020-07-31 16:33:21 |
| R32.htm | 23814 | 2020-07-31 16:33:21 |
| R33.htm | 38835 | 2020-07-31 16:33:21 |
| R34.htm | 284220 | 2020-07-31 16:33:21 |
| R35.htm | 33157 | 2020-07-31 16:33:21 |
| R36.htm | 25159 | 2020-07-31 16:33:21 |
| R37.htm | 35026 | 2020-07-31 16:33:21 |
| R38.htm | 34454 | 2020-07-31 16:33:21 |
| R39.htm | 37683 | 2020-07-31 16:33:21 |
| R4.htm | 110902 | 2020-07-31 16:33:21 |
| R40.htm | 51740 | 2020-07-31 16:33:21 |
| R41.htm | 126481 | 2020-07-31 16:33:21 |
| R42.htm | 81395 | 2020-07-31 16:33:21 |
| R43.htm | 110825 | 2020-07-31 16:33:21 |
| R44.htm | 97895 | 2020-07-31 16:33:21 |
| R45.htm | 116744 | 2020-07-31 16:33:21 |
| R46.htm | 47651 | 2020-07-31 16:33:21 |
| R47.htm | 25925 | 2020-07-31 16:33:21 |
| R48.htm | 35382 | 2020-07-31 16:33:21 |
| R49.htm | 19234 | 2020-07-31 16:33:21 |
| R5.htm | 38026 | 2020-07-31 16:33:21 |
| R50.htm | 22475 | 2020-07-31 16:33:21 |
| R51.htm | 5479 | 2020-07-31 16:33:21 |
| R52.htm | 13284 | 2020-07-31 16:33:21 |
| R53.htm | 11697 | 2020-07-31 16:33:21 |
| R54.htm | 20984 | 2020-07-31 16:33:21 |
| R55.htm | 37318 | 2020-07-31 16:33:21 |
| R56.htm | 8726 | 2020-07-31 16:33:21 |
| R57.htm | 29901 | 2020-07-31 16:33:21 |
| R58.htm | 11097 | 2020-07-31 16:33:21 |
| R59.htm | 42035 | 2020-07-31 16:33:21 |
| R6.htm | 72541 | 2020-07-31 16:33:21 |
| R60.htm | 48078 | 2020-07-31 16:33:21 |
| R61.htm | 32420 | 2020-07-31 16:33:21 |
| R62.htm | 82668 | 2020-07-31 16:33:21 |
| R63.htm | 17275 | 2020-07-31 16:33:21 |
| R64.htm | 5019 | 2020-07-31 16:33:21 |
| R65.htm | 32027 | 2020-07-31 16:33:21 |
| R66.htm | 25175 | 2020-07-31 16:33:21 |
| R7.htm | 7275 | 2020-07-31 16:33:21 |
| R8.htm | 97145 | 2020-07-31 16:33:21 |
| R9.htm | 10751 | 2020-07-31 16:33:21 |
| report.css | 2767 | 2020-07-31 16:33:21 |
| Show.js | 1085 | 2020-07-31 16:33:21 |
| ubfo-20200630.htm | 5155253 | 2020-07-31 16:33:21 |
| ubfo-20200630.xsd | 55760 | 2020-07-31 16:33:21 |
| ubfo-20200630exhibit311.htm | 10142 | 2020-07-31 16:33:21 |
| ubfo-20200630exhibit312.htm | 10142 | 2020-07-31 16:33:21 |
| ubfo-20200630exhibit321.htm | 4352 | 2020-07-31 16:33:21 |
| ubfo-20200630exhibit322.htm | 4346 | 2020-07-31 16:33:21 |
| ubfo-20200630_cal.xml | 131688 | 2020-07-31 16:33:21 |
| ubfo-20200630_def.xml | 346064 | 2020-07-31 16:33:21 |
| ubfo-20200630_htm.xml | 5667076 | 2020-07-31 16:33:21 |
| ubfo-20200630_lab.xml | 743981 | 2020-07-31 16:33:21 |
| ubfo-20200630_pre.xml | 537402 | 2020-07-31 16:33:21 |