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| 0000013239-20-000022-index.html | 2020-08-14 12:50:45 | |
| 0000013239-20-000022.txt | 2020-08-14 12:50:45 | |
 0000013239-20-000022-xbrl.zip | 338041 | 2020-08-14 12:50:45 |
| exhibit31106302020.htm | 11910 | 2020-08-14 12:50:45 |
| exhibit32106302020.htm | 7028 | 2020-08-14 12:50:45 |
| FilingSummary.xml | 26196 | 2020-08-14 12:50:45 |
| Financial_Report.xlsx | 71733 | 2020-08-14 12:50:45 |
| hsc-20200630.htm | 2697155 | 2020-08-14 12:50:45 |
| hsc-20200630.xsd | 45656 | 2020-08-14 12:50:45 |
| hsc-20200630_cal.xml | 69332 | 2020-08-14 12:50:45 |
| hsc-20200630_def.xml | 339102 | 2020-08-14 12:50:45 |
 hsc-20200630_g1.jpg | 56122 | 2020-08-14 12:50:45 |
| hsc-20200630_htm.xml | 1863254 | 2020-08-14 12:50:45 |
| hsc-20200630_lab.xml | 588802 | 2020-08-14 12:50:45 |
| hsc-20200630_pre.xml | 403028 | 2020-08-14 12:50:45 |
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| R1.htm | 49719 | 2020-08-14 12:50:45 |
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| R9.htm | 45686 | 2020-08-14 12:50:45 |
| report.css | 2767 | 2020-08-14 12:50:45 |
| Show.js | 1085 | 2020-08-14 12:50:45 |