Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000915358-20-000023-index-headers.html | 2020-12-11 10:30:16 | |
| 0000915358-20-000023-index.html | 2020-12-11 10:30:16 | |
| 0000915358-20-000023.txt | 2020-12-11 10:30:16 | |
 0000915358-20-000023-xbrl.zip | 109407 | 2020-12-11 10:30:16 |
| FilingSummary.xml | 26219 | 2020-12-11 10:30:16 |
| Financial_Report.xlsx | 66244 | 2020-12-11 10:30:16 |
| R1.htm | 52261 | 2020-12-11 10:30:16 |
| R10.htm | 63820 | 2020-12-11 10:30:16 |
| R11.htm | 121858 | 2020-12-11 10:30:16 |
| R12.htm | 9744 | 2020-12-11 10:30:16 |
| R13.htm | 5801 | 2020-12-11 10:30:16 |
| R14.htm | 63943 | 2020-12-11 10:30:16 |
| R15.htm | 10992 | 2020-12-11 10:30:16 |
| R16.htm | 161532 | 2020-12-11 10:30:16 |
| R17.htm | 74608 | 2020-12-11 10:30:16 |
| R18.htm | 27889 | 2020-12-11 10:30:16 |
| R19.htm | 61063 | 2020-12-11 10:30:16 |
| R2.htm | 90768 | 2020-12-11 10:30:16 |
| R20.htm | 94079 | 2020-12-11 10:30:16 |
| R21.htm | 44460 | 2020-12-11 10:30:16 |
| R22.htm | 159589 | 2020-12-11 10:30:16 |
| R23.htm | 4828 | 2020-12-11 10:30:16 |
| R24.htm | 6770 | 2020-12-11 10:30:16 |
| R25.htm | 15526 | 2020-12-11 10:30:16 |
| R26.htm | 13660 | 2020-12-11 10:30:16 |
| R27.htm | 23519 | 2020-12-11 10:30:16 |
| R28.htm | 154074 | 2020-12-11 10:30:16 |
| R29.htm | 28504 | 2020-12-11 10:30:16 |
| R3.htm | 21470 | 2020-12-11 10:30:16 |
| R30.htm | 36087 | 2020-12-11 10:30:16 |
| R31.htm | 15091 | 2020-12-11 10:30:16 |
| R32.htm | 30096 | 2020-12-11 10:30:16 |
| R33.htm | 12568 | 2020-12-11 10:30:16 |
| R34.htm | 38003 | 2020-12-11 10:30:16 |
| R35.htm | 7494 | 2020-12-11 10:30:16 |
| R36.htm | 26980 | 2020-12-11 10:30:16 |
| R37.htm | 16885 | 2020-12-11 10:30:16 |
| R38.htm | 11621 | 2020-12-11 10:30:16 |
| R39.htm | 44044 | 2020-12-11 10:30:16 |
| R4.htm | 41951 | 2020-12-11 10:30:16 |
| R40.htm | 13786 | 2020-12-11 10:30:16 |
| R5.htm | 19991 | 2020-12-11 10:30:16 |
| R6.htm | 86357 | 2020-12-11 10:30:16 |
| R7.htm | 6758 | 2020-12-11 10:30:16 |
| R8.htm | 14936 | 2020-12-11 10:30:16 |
| R9.htm | 27782 | 2020-12-11 10:30:16 |
| report.css | 2767 | 2020-12-11 10:30:16 |
| sgma-20201031.xml | 1130002 | 2020-12-11 10:30:16 |
| sgma-20201031.xsd | 34613 | 2020-12-11 10:30:16 |
| sgma-20201031x10q.htm | 1367306 | 2020-12-11 10:30:16 |
| sgma-20201031xex10_1.htm | 44233 | 2020-12-11 10:30:16 |
| sgma-20201031xex10_2.htm | 44985 | 2020-12-11 10:30:16 |
| sgma-20201031xex31_1.htm | 22853 | 2020-12-11 10:30:16 |
| sgma-20201031xex31_2.htm | 23573 | 2020-12-11 10:30:16 |
| sgma-20201031xex32_1.htm | 15649 | 2020-12-11 10:30:16 |
| sgma-20201031xex32_2.htm | 15524 | 2020-12-11 10:30:16 |
| sgma-20201031_cal.xml | 63007 | 2020-12-11 10:30:16 |
| sgma-20201031_def.xml | 93344 | 2020-12-11 10:30:16 |
| sgma-20201031_lab.xml | 305022 | 2020-12-11 10:30:16 |
| sgma-20201031_pre.xml | 253076 | 2020-12-11 10:30:16 |
| Show.js | 1085 | 2020-12-11 10:30:16 |