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| 0001654954-19-012967-index.html | 2019-11-14 15:47:07 | |
| 0001654954-19-012967.txt | 2019-11-14 15:47:07 | |
 0001654954-19-012967-xbrl.zip | 56078 | 2019-11-14 15:47:07 |
| FilingSummary.xml | 16956 | 2019-11-14 15:47:07 |
| Financial_Report.xlsx | 37991 | 2019-11-14 15:47:07 |
| R1.htm | 27722 | 2019-11-14 15:47:07 |
| R10.htm | 13684 | 2019-11-14 15:47:07 |
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| R9.htm | 8694 | 2019-11-14 15:47:07 |
| report.css | 2767 | 2019-11-14 15:47:07 |
| Show.js | 1085 | 2019-11-14 15:47:07 |
| zmtp-20190930.xml | 388275 | 2019-11-14 15:47:07 |
| zmtp-20190930.xsd | 18375 | 2019-11-14 15:47:07 |
| zmtp-20190930_cal.xml | 36465 | 2019-11-14 15:47:07 |
| zmtp-20190930_def.xml | 26535 | 2019-11-14 15:47:07 |
| zmtp-20190930_lab.xml | 127595 | 2019-11-14 15:47:07 |
| zmtp-20190930_pre.xml | 98729 | 2019-11-14 15:47:07 |
| zmtp_10q.htm | 674582 | 2019-11-14 15:47:07 |
| zmtp_ex311.htm | 12785 | 2019-11-14 15:47:07 |
| zmtp_ex321.htm | 7645 | 2019-11-14 15:47:07 |