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| 0001558370-22-008024-index.html | 2022-05-10 12:34:45 | |
| 0001558370-22-008024.txt | 2022-05-10 12:34:45 | |
 0001558370-22-008024-xbrl.zip | 197061 | 2022-05-10 12:34:45 |
| erkh-20220331.xsd | 32492 | 2022-05-10 12:34:45 |
| erkh-20220331x10q.htm | 1899074 | 2022-05-10 12:34:45 |
| erkh-20220331x10q_htm.xml | 2564287 | 2022-05-10 12:34:45 |
| erkh-20220331xex31d1.htm | 10116 | 2022-05-10 12:34:45 |
| erkh-20220331xex31d2.htm | 10050 | 2022-05-10 12:34:45 |
| erkh-20220331xex32.htm | 7709 | 2022-05-10 12:34:45 |
| erkh-20220331_cal.xml | 55035 | 2022-05-10 12:34:45 |
| erkh-20220331_def.xml | 135150 | 2022-05-10 12:34:45 |
| erkh-20220331_lab.xml | 382724 | 2022-05-10 12:34:45 |
| erkh-20220331_pre.xml | 280479 | 2022-05-10 12:34:45 |
| FilingSummary.xml | 27682 | 2022-05-10 12:34:45 |
| Financial_Report.xlsx | 64109 | 2022-05-10 12:34:45 |
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