Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-23-017747-index-headers.html | 2023-05-04 15:02:22 | |
| 0000950170-23-017747-index.html | 2023-05-04 15:02:22 | |
| 0000950170-23-017747.txt | 2023-05-04 15:02:22 | |
 0000950170-23-017747-xbrl.zip | 235997 | 2023-05-04 15:02:22 |
| ck0000716133-20230331.htm | 3191887 | 2023-05-04 15:02:22 |
| ck0000716133-20230331.xsd | 71458 | 2023-05-04 15:02:22 |
| ck0000716133-20230331_cal.xml | 80605 | 2023-05-04 15:02:22 |
| ck0000716133-20230331_def.xml | 259199 | 2023-05-04 15:02:22 |
| ck0000716133-20230331_htm.xml | 2933803 | 2023-05-04 15:02:22 |
| ck0000716133-20230331_lab.xml | 527282 | 2023-05-04 15:02:22 |
| ck0000716133-20230331_pre.xml | 414551 | 2023-05-04 15:02:22 |
| ck0000716133-ex31_1.htm | 16461 | 2023-05-04 15:02:22 |
| ck0000716133-ex31_2.htm | 16509 | 2023-05-04 15:02:22 |
| ck0000716133-ex32_1.htm | 8663 | 2023-05-04 15:02:22 |
| ck0000716133-ex32_2.htm | 8684 | 2023-05-04 15:02:22 |
| FilingSummary.xml | 40871 | 2023-05-04 15:02:22 |
| Financial_Report.xlsx | 94600 | 2023-05-04 15:02:22 |
| MetaLinks.json | 830767 | 2023-05-04 15:02:22 |
| R1.htm | 45457 | 2023-05-04 15:02:22 |
| R10.htm | 65695 | 2023-05-04 15:02:22 |
| R11.htm | 286413 | 2023-05-04 15:02:22 |
| R12.htm | 157270 | 2023-05-04 15:02:22 |
| R13.htm | 138756 | 2023-05-04 15:02:22 |
| R14.htm | 96142 | 2023-05-04 15:02:22 |
| R15.htm | 196309 | 2023-05-04 15:02:22 |
| R16.htm | 87726 | 2023-05-04 15:02:22 |
| R17.htm | 62781 | 2023-05-04 15:02:22 |
| R18.htm | 139743 | 2023-05-04 15:02:22 |
| R19.htm | 75744 | 2023-05-04 15:02:22 |
| R2.htm | 53482 | 2023-05-04 15:02:22 |
| R20.htm | 20394 | 2023-05-04 15:02:22 |
| R21.htm | 58175 | 2023-05-04 15:02:22 |
| R22.htm | 256188 | 2023-05-04 15:02:22 |
| R23.htm | 153602 | 2023-05-04 15:02:22 |
| R24.htm | 117363 | 2023-05-04 15:02:22 |
| R25.htm | 95309 | 2023-05-04 15:02:22 |
| R26.htm | 178456 | 2023-05-04 15:02:22 |
| R27.htm | 76157 | 2023-05-04 15:02:22 |
| R28.htm | 57946 | 2023-05-04 15:02:22 |
| R29.htm | 132624 | 2023-05-04 15:02:22 |
| R3.htm | 33649 | 2023-05-04 15:02:22 |
| R30.htm | 11867 | 2023-05-04 15:02:22 |
| R31.htm | 12201 | 2023-05-04 15:02:22 |
| R32.htm | 16507 | 2023-05-04 15:02:22 |
| R33.htm | 33404 | 2023-05-04 15:02:22 |
| R34.htm | 22571 | 2023-05-04 15:02:22 |
| R35.htm | 27417 | 2023-05-04 15:02:22 |
| R36.htm | 21697 | 2023-05-04 15:02:22 |
| R37.htm | 27948 | 2023-05-04 15:02:22 |
| R38.htm | 33117 | 2023-05-04 15:02:22 |
| R39.htm | 27820 | 2023-05-04 15:02:22 |
| R4.htm | 6965 | 2023-05-04 15:02:22 |
| R40.htm | 25195 | 2023-05-04 15:02:22 |
| R41.htm | 28144 | 2023-05-04 15:02:22 |
| R42.htm | 12496 | 2023-05-04 15:02:22 |
| R43.htm | 17279 | 2023-05-04 15:02:22 |
| R44.htm | 60054 | 2023-05-04 15:02:22 |
| R45.htm | 11994 | 2023-05-04 15:02:22 |
| R46.htm | 26920 | 2023-05-04 15:02:22 |
| R47.htm | 25999 | 2023-05-04 15:02:22 |
| R48.htm | 22183 | 2023-05-04 15:02:22 |
| R49.htm | 15753 | 2023-05-04 15:02:22 |
| R5.htm | 32387 | 2023-05-04 15:02:22 |
| R50.htm | 33642 | 2023-05-04 15:02:22 |
| R51.htm | 36016 | 2023-05-04 15:02:22 |
| R52.htm | 10403 | 2023-05-04 15:02:22 |
| R53.htm | 11779 | 2023-05-04 15:02:22 |
| R54.htm | 18693 | 2023-05-04 15:02:22 |
| R55.htm | 30260 | 2023-05-04 15:02:22 |
| R56.htm | 22815 | 2023-05-04 15:02:22 |
| R57.htm | 4815 | 2023-05-04 15:02:22 |
| R58.htm | 47122 | 2023-05-04 15:02:22 |
| R6.htm | 128065 | 2023-05-04 15:02:22 |
| R7.htm | 4956 | 2023-05-04 15:02:22 |
| R8.htm | 85407 | 2023-05-04 15:02:22 |
| R9.htm | 49293 | 2023-05-04 15:02:22 |
| report.css | 2767 | 2023-05-04 15:02:22 |
| Show.js | 1085 | 2023-05-04 15:02:22 |