Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000010048-21-000014-index-headers.html | 2021-05-13 16:32:16 | |
| 0000010048-21-000014-index.html | 2021-05-13 16:32:16 | |
| 0000010048-21-000014.txt | 2021-05-13 16:32:16 | |
 0000010048-21-000014-xbrl.zip | 309720 | 2021-05-13 16:32:16 |
| brn-20210331.htm | 1885311 | 2021-05-13 16:32:16 |
| brn-20210331.xsd | 56183 | 2021-05-13 16:32:16 |
| brn-20210331_cal.xml | 95466 | 2021-05-13 16:32:16 |
| brn-20210331_def.xml | 301340 | 2021-05-13 16:32:16 |
| brn-20210331_htm.xml | 1953649 | 2021-05-13 16:32:16 |
| brn-20210331_lab.xml | 645912 | 2021-05-13 16:32:16 |
| brn-20210331_pre.xml | 455850 | 2021-05-13 16:32:16 |
| exhibit101_033121.htm | 32268 | 2021-05-13 16:32:16 |
| exhibit311_033121.htm | 10890 | 2021-05-13 16:32:16 |
| exhibit312_033121.htm | 11083 | 2021-05-13 16:32:16 |
| exhibit32_033121.htm | 9408 | 2021-05-13 16:32:16 |
| FilingSummary.xml | 38245 | 2021-05-13 16:32:16 |
| Financial_Report.xlsx | 97590 | 2021-05-13 16:32:16 |
| MetaLinks.json | 659240 | 2021-05-13 16:32:16 |
| R1.htm | 53790 | 2021-05-13 16:32:16 |
| R10.htm | 17080 | 2021-05-13 16:32:16 |
| R11.htm | 10128 | 2021-05-13 16:32:16 |
| R12.htm | 43959 | 2021-05-13 16:32:16 |
| R13.htm | 43444 | 2021-05-13 16:32:16 |
| R14.htm | 5244 | 2021-05-13 16:32:16 |
| R15.htm | 5490 | 2021-05-13 16:32:16 |
| R16.htm | 8383 | 2021-05-13 16:32:16 |
| R17.htm | 63401 | 2021-05-13 16:32:16 |
| R18.htm | 31759 | 2021-05-13 16:32:16 |
| R19.htm | 203157 | 2021-05-13 16:32:16 |
| R2.htm | 118485 | 2021-05-13 16:32:16 |
| R20.htm | 76911 | 2021-05-13 16:32:16 |
| R21.htm | 40036 | 2021-05-13 16:32:16 |
| R22.htm | 9140 | 2021-05-13 16:32:16 |
| R23.htm | 8365 | 2021-05-13 16:32:16 |
| R24.htm | 34241 | 2021-05-13 16:32:16 |
| R25.htm | 9232 | 2021-05-13 16:32:16 |
| R26.htm | 11170 | 2021-05-13 16:32:16 |
| R27.htm | 7237 | 2021-05-13 16:32:16 |
| R28.htm | 10054 | 2021-05-13 16:32:16 |
| R29.htm | 28303 | 2021-05-13 16:32:16 |
| R3.htm | 13423 | 2021-05-13 16:32:16 |
| R30.htm | 42209 | 2021-05-13 16:32:16 |
| R31.htm | 31402 | 2021-05-13 16:32:16 |
| R32.htm | 55967 | 2021-05-13 16:32:16 |
| R33.htm | 30191 | 2021-05-13 16:32:16 |
| R34.htm | 192290 | 2021-05-13 16:32:16 |
| R35.htm | 73124 | 2021-05-13 16:32:16 |
| R36.htm | 38672 | 2021-05-13 16:32:16 |
| R37.htm | 30454 | 2021-05-13 16:32:16 |
| R38.htm | 9552 | 2021-05-13 16:32:16 |
| R39.htm | 7292 | 2021-05-13 16:32:16 |
| R4.htm | 80926 | 2021-05-13 16:32:16 |
| R40.htm | 42516 | 2021-05-13 16:32:16 |
| R41.htm | 87781 | 2021-05-13 16:32:16 |
| R42.htm | 23499 | 2021-05-13 16:32:16 |
| R43.htm | 48795 | 2021-05-13 16:32:16 |
| R44.htm | 9208 | 2021-05-13 16:32:16 |
| R45.htm | 5405 | 2021-05-13 16:32:16 |
| R46.htm | 4278 | 2021-05-13 16:32:16 |
| R47.htm | 4541 | 2021-05-13 16:32:16 |
| R48.htm | 10705 | 2021-05-13 16:32:16 |
| R49.htm | 57660 | 2021-05-13 16:32:16 |
| R5.htm | 42119 | 2021-05-13 16:32:16 |
| R50.htm | 21265 | 2021-05-13 16:32:16 |
| R51.htm | 93360 | 2021-05-13 16:32:16 |
| R52.htm | 10391 | 2021-05-13 16:32:16 |
| R53.htm | 19172 | 2021-05-13 16:32:16 |
| R54.htm | 66963 | 2021-05-13 16:32:16 |
| R55.htm | 39235 | 2021-05-13 16:32:16 |
| R56.htm | 33576 | 2021-05-13 16:32:16 |
| R57.htm | 38172 | 2021-05-13 16:32:16 |
| R58.htm | 39865 | 2021-05-13 16:32:16 |
| R59.htm | 27192 | 2021-05-13 16:32:16 |
| R6.htm | 13642 | 2021-05-13 16:32:16 |
| R60.htm | 12609 | 2021-05-13 16:32:16 |
| R61.htm | 18848 | 2021-05-13 16:32:16 |
| R62.htm | 11624 | 2021-05-13 16:32:16 |
| R63.htm | 19547 | 2021-05-13 16:32:16 |
| R64.htm | 47204 | 2021-05-13 16:32:16 |
| R7.htm | 49577 | 2021-05-13 16:32:16 |
| R8.htm | 13385 | 2021-05-13 16:32:16 |
| R9.htm | 84918 | 2021-05-13 16:32:16 |
| report.css | 2767 | 2021-05-13 16:32:16 |
| Show.js | 1085 | 2021-05-13 16:32:16 |