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|---|---|---|
 0000894245-20-000035-index-headers.html | 2020-08-14 12:39:35 | |
| 0000894245-20-000035-index.html | 2020-08-14 12:39:35 | |
| 0000894245-20-000035.txt | 2020-08-14 12:39:35 | |
 0000894245-20-000035-xbrl.zip | 36501 | 2020-08-14 12:39:35 |
| 21-YR20Q2.htm | 221227 | 2020-08-14 12:39:35 |
| aei21-20200630.xml | 77898 | 2020-08-14 12:39:35 |
| aei21-20200630.xsd | 16273 | 2020-08-14 12:39:35 |
| aei21-20200630_cal.xml | 18369 | 2020-08-14 12:39:35 |
| aei21-20200630_def.xml | 74308 | 2020-08-14 12:39:35 |
| aei21-20200630_lab.xml | 125811 | 2020-08-14 12:39:35 |
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| ex31-121.htm | 9647 | 2020-08-14 12:39:35 |
| ex31-221.htm | 8476 | 2020-08-14 12:39:35 |
| ex32-21.htm | 9161 | 2020-08-14 12:39:35 |
| FilingSummary.xml | 10537 | 2020-08-14 12:39:35 |
| Financial_Report.xlsx | 28313 | 2020-08-14 12:39:35 |
| R1.htm | 51133 | 2020-08-14 12:39:35 |
| R10.htm | 6508 | 2020-08-14 12:39:35 |
| R11.htm | 4939 | 2020-08-14 12:39:35 |
| R12.htm | 6771 | 2020-08-14 12:39:35 |
| R13.htm | 6508 | 2020-08-14 12:39:35 |
| R14.htm | 6381 | 2020-08-14 12:39:35 |
| R15.htm | 15562 | 2020-08-14 12:39:35 |
| R16.htm | 15549 | 2020-08-14 12:39:35 |
| R17.htm | 10729 | 2020-08-14 12:39:35 |
| R18.htm | 28895 | 2020-08-14 12:39:35 |
| R2.htm | 60835 | 2020-08-14 12:39:35 |
| R3.htm | 7760 | 2020-08-14 12:39:35 |
| R4.htm | 39286 | 2020-08-14 12:39:35 |
| R5.htm | 41113 | 2020-08-14 12:39:35 |
| R6.htm | 32385 | 2020-08-14 12:39:35 |
| R7.htm | 5523 | 2020-08-14 12:39:35 |
| R8.htm | 11144 | 2020-08-14 12:39:35 |
| R9.htm | 4680 | 2020-08-14 12:39:35 |
| report.css | 2767 | 2020-08-14 12:39:35 |
| Show.js | 1085 | 2020-08-14 12:39:35 |