Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-24-032429-index-headers.html | 2024-10-29 13:37:05 | |
| 0001437749-24-032429-index.html | 2024-10-29 13:37:05 | |
| 0001437749-24-032429.txt | 2024-10-29 13:37:05 | |
 0001437749-24-032429-xbrl.zip | 205278 | 2024-10-29 13:37:05 |
| belfa-20240930.xsd | 63603 | 2024-10-29 13:37:05 |
| belfa-20240930_cal.xml | 56408 | 2024-10-29 13:37:05 |
| belfa-20240930_def.xml | 449124 | 2024-10-29 13:37:05 |
| belfa-20240930_lab.xml | 383242 | 2024-10-29 13:37:05 |
| belfa-20240930_pre.xml | 489517 | 2024-10-29 13:37:05 |
| belfb20240930_10q.htm | 2179739 | 2024-10-29 13:37:05 |
| belfb20240930_10q_htm.xml | 1938606 | 2024-10-29 13:37:05 |
| ex_718461.htm | 14353 | 2024-10-29 13:37:05 |
| ex_718462.htm | 14737 | 2024-10-29 13:37:05 |
| ex_718463.htm | 4864 | 2024-10-29 13:37:05 |
| ex_718464.htm | 4877 | 2024-10-29 13:37:05 |
| FilingSummary.xml | 46037 | 2024-10-29 13:37:05 |
| Financial_Report.xlsx | 101516 | 2024-10-29 13:37:05 |
| MetaLinks.json | 945058 | 2024-10-29 13:37:05 |
| R1.htm | 56365 | 2024-10-29 13:37:05 |
| R10.htm | 27492 | 2024-10-29 13:37:05 |
| R11.htm | 9964 | 2024-10-29 13:37:05 |
| R12.htm | 21777 | 2024-10-29 13:37:05 |
| R13.htm | 124091 | 2024-10-29 13:37:05 |
| R14.htm | 73292 | 2024-10-29 13:37:05 |
| R15.htm | 92291 | 2024-10-29 13:37:05 |
| R16.htm | 14025 | 2024-10-29 13:37:05 |
| R17.htm | 19862 | 2024-10-29 13:37:05 |
| R18.htm | 39016 | 2024-10-29 13:37:05 |
| R19.htm | 53795 | 2024-10-29 13:37:05 |
| R2.htm | 134652 | 2024-10-29 13:37:05 |
| R20.htm | 19052 | 2024-10-29 13:37:05 |
| R21.htm | 11861 | 2024-10-29 13:37:05 |
| R22.htm | 37044 | 2024-10-29 13:37:05 |
| R23.htm | 56630 | 2024-10-29 13:37:05 |
| R24.htm | 14227 | 2024-10-29 13:37:05 |
| R25.htm | 75986 | 2024-10-29 13:37:05 |
| R26.htm | 14026 | 2024-10-29 13:37:05 |
| R27.htm | 13097 | 2024-10-29 13:37:05 |
| R28.htm | 20074 | 2024-10-29 13:37:05 |
| R29.htm | 118565 | 2024-10-29 13:37:05 |
| R3.htm | 25973 | 2024-10-29 13:37:05 |
| R30.htm | 71537 | 2024-10-29 13:37:05 |
| R31.htm | 79214 | 2024-10-29 13:37:05 |
| R32.htm | 13917 | 2024-10-29 13:37:05 |
| R33.htm | 16353 | 2024-10-29 13:37:05 |
| R34.htm | 36729 | 2024-10-29 13:37:05 |
| R35.htm | 45636 | 2024-10-29 13:37:05 |
| R36.htm | 28854 | 2024-10-29 13:37:05 |
| R37.htm | 55108 | 2024-10-29 13:37:05 |
| R38.htm | 67935 | 2024-10-29 13:37:05 |
| R39.htm | 10199 | 2024-10-29 13:37:05 |
| R4.htm | 82601 | 2024-10-29 13:37:05 |
| R40.htm | 31164 | 2024-10-29 13:37:05 |
| R41.htm | 23223 | 2024-10-29 13:37:05 |
| R42.htm | 40282 | 2024-10-29 13:37:05 |
| R43.htm | 12867 | 2024-10-29 13:37:05 |
| R44.htm | 34559 | 2024-10-29 13:37:05 |
| R45.htm | 6045 | 2024-10-29 13:37:05 |
| R46.htm | 35416 | 2024-10-29 13:37:05 |
| R47.htm | 32821 | 2024-10-29 13:37:05 |
| R48.htm | 33449 | 2024-10-29 13:37:05 |
| R49.htm | 37327 | 2024-10-29 13:37:05 |
| R5.htm | 33127 | 2024-10-29 13:37:05 |
| R50.htm | 10442 | 2024-10-29 13:37:05 |
| R51.htm | 7037 | 2024-10-29 13:37:05 |
| R52.htm | 16269 | 2024-10-29 13:37:05 |
| R53.htm | 17100 | 2024-10-29 13:37:05 |
| R54.htm | 12859 | 2024-10-29 13:37:05 |
| R55.htm | 11751 | 2024-10-29 13:37:05 |
| R56.htm | 11030 | 2024-10-29 13:37:05 |
| R57.htm | 6550 | 2024-10-29 13:37:05 |
| R58.htm | 33339 | 2024-10-29 13:37:05 |
| R59.htm | 9699 | 2024-10-29 13:37:05 |
| R6.htm | 12454 | 2024-10-29 13:37:05 |
| R60.htm | 21272 | 2024-10-29 13:37:05 |
| R61.htm | 14415 | 2024-10-29 13:37:05 |
| R62.htm | 10164 | 2024-10-29 13:37:05 |
| R63.htm | 15667 | 2024-10-29 13:37:05 |
| R64.htm | 8701 | 2024-10-29 13:37:05 |
| R65.htm | 35465 | 2024-10-29 13:37:05 |
| R66.htm | 13452 | 2024-10-29 13:37:05 |
| R67.htm | 7745 | 2024-10-29 13:37:05 |
| R68.htm | 26865 | 2024-10-29 13:37:05 |
| R7.htm | 234878 | 2024-10-29 13:37:05 |
| R8.htm | 17540 | 2024-10-29 13:37:05 |
| R9.htm | 105268 | 2024-10-29 13:37:05 |
| report.css | 2767 | 2024-10-29 13:37:05 |
| Show.js | 1085 | 2024-10-29 13:37:05 |