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|---|---|---|
 0000773674-20-000052-index-headers.html | 2020-08-18 11:55:48 | |
| 0000773674-20-000052-index.html | 2020-08-18 11:55:48 | |
| 0000773674-20-000052.txt | 2020-08-18 11:55:48 | |
 0000773674-20-000052-xbrl.zip | 80170 | 2020-08-18 11:55:48 |
| acgitxbrldocument_08182020.htm | 48971 | 2020-08-18 11:55:48 |
 acihorizblk84.jpg | 64577 | 2020-08-18 11:55:48 |
 BarChart1.png | 10414 | 2020-08-18 11:55:48 |
 BarChart2.png | 15261 | 2020-08-18 11:55:48 |
 BarChart3.png | 15539 | 2020-08-18 11:55:48 |
 BarChart4.png | 13535 | 2020-08-18 11:55:48 |
 BarChart5.png | 14857 | 2020-08-18 11:55:48 |
| ck0000773674-20200831.xml | 494267 | 2020-08-18 11:55:48 |
| ck0000773674-20200831.xsd | 10321 | 2020-08-18 11:55:48 |
| ck0000773674-20200831_cal.xml | 4534 | 2020-08-18 11:55:48 |
| ck0000773674-20200831_def.xml | 23821 | 2020-08-18 11:55:48 |
| ck0000773674-20200831_lab.xml | 219988 | 2020-08-18 11:55:48 |
| ck0000773674-20200831_pre.xml | 250661 | 2020-08-18 11:55:48 |
| FilingSummary.xml | 2474 | 2020-08-18 11:55:48 |
| R1.htm | 293065 | 2020-08-18 11:55:48 |
| R7.htm | 673887 | 2020-08-18 11:55:48 |
| report.css | 2767 | 2020-08-18 11:55:48 |
| Show.js | 1085 | 2020-08-18 11:55:48 |