Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001692115-19-000045-index-headers.html | 2019-05-08 16:01:10 | |
| 0001692115-19-000045-index.html | 2019-05-08 16:01:10 | |
| 0001692115-19-000045.txt | 2019-05-08 16:01:10 | |
 0001692115-19-000045-xbrl.zip | 410661 | 2019-05-08 16:01:10 |
| FilingSummary.xml | 45181 | 2019-05-08 16:01:10 |
| Financial_Report.xlsx | 108365 | 2019-05-08 16:01:10 |
| MetaLinks.json | 749382 | 2019-05-08 16:01:10 |
| R1.htm | 31189 | 2019-05-08 16:01:10 |
| R10.htm | 246647 | 2019-05-08 16:01:10 |
| R11.htm | 107013 | 2019-05-08 16:01:10 |
| R12.htm | 31691 | 2019-05-08 16:01:10 |
| R13.htm | 124653 | 2019-05-08 16:01:10 |
| R14.htm | 6143 | 2019-05-08 16:01:10 |
| R15.htm | 501584 | 2019-05-08 16:01:10 |
| R16.htm | 76358 | 2019-05-08 16:01:10 |
| R17.htm | 12434 | 2019-05-08 16:01:10 |
| R18.htm | 47556 | 2019-05-08 16:01:10 |
| R19.htm | 39251 | 2019-05-08 16:01:10 |
| R2.htm | 124186 | 2019-05-08 16:01:10 |
| R20.htm | 83722 | 2019-05-08 16:01:10 |
| R21.htm | 71338 | 2019-05-08 16:01:10 |
| R22.htm | 109881 | 2019-05-08 16:01:10 |
| R23.htm | 137918 | 2019-05-08 16:01:10 |
| R24.htm | 111665 | 2019-05-08 16:01:10 |
| R25.htm | 27486 | 2019-05-08 16:01:10 |
| R26.htm | 119810 | 2019-05-08 16:01:10 |
| R27.htm | 504572 | 2019-05-08 16:01:10 |
| R28.htm | 76401 | 2019-05-08 16:01:10 |
| R29.htm | 9172 | 2019-05-08 16:01:10 |
| R3.htm | 10739 | 2019-05-08 16:01:10 |
| R30.htm | 44069 | 2019-05-08 16:01:10 |
| R31.htm | 16584 | 2019-05-08 16:01:10 |
| R32.htm | 31715 | 2019-05-08 16:01:10 |
| R33.htm | 7521 | 2019-05-08 16:01:10 |
| R34.htm | 17776 | 2019-05-08 16:01:10 |
| R35.htm | 29969 | 2019-05-08 16:01:10 |
| R36.htm | 27973 | 2019-05-08 16:01:10 |
| R37.htm | 11583 | 2019-05-08 16:01:10 |
| R38.htm | 9078 | 2019-05-08 16:01:10 |
| R39.htm | 24601 | 2019-05-08 16:01:10 |
| R4.htm | 73974 | 2019-05-08 16:01:10 |
| R40.htm | 26935 | 2019-05-08 16:01:10 |
| R41.htm | 9037 | 2019-05-08 16:01:10 |
| R42.htm | 13935 | 2019-05-08 16:01:10 |
| R43.htm | 27312 | 2019-05-08 16:01:10 |
| R44.htm | 20213 | 2019-05-08 16:01:10 |
| R45.htm | 19758 | 2019-05-08 16:01:10 |
| R46.htm | 32327 | 2019-05-08 16:01:10 |
| R47.htm | 44338 | 2019-05-08 16:01:10 |
| R48.htm | 8724 | 2019-05-08 16:01:10 |
| R49.htm | 26274 | 2019-05-08 16:01:10 |
| R5.htm | 50417 | 2019-05-08 16:01:10 |
| R50.htm | 22266 | 2019-05-08 16:01:10 |
| R51.htm | 4453 | 2019-05-08 16:01:10 |
| R52.htm | 10943 | 2019-05-08 16:01:10 |
| R53.htm | 18403 | 2019-05-08 16:01:10 |
| R54.htm | 6521 | 2019-05-08 16:01:10 |
| R55.htm | 11142 | 2019-05-08 16:01:10 |
| R56.htm | 17650 | 2019-05-08 16:01:10 |
| R57.htm | 33680 | 2019-05-08 16:01:10 |
| R58.htm | 121238 | 2019-05-08 16:01:10 |
| R59.htm | 42613 | 2019-05-08 16:01:10 |
| R6.htm | 116554 | 2019-05-08 16:01:10 |
| R60.htm | 16117 | 2019-05-08 16:01:10 |
| R61.htm | 87659 | 2019-05-08 16:01:10 |
| R62.htm | 73494 | 2019-05-08 16:01:10 |
| R63.htm | 4513 | 2019-05-08 16:01:10 |
| R64.htm | 104443 | 2019-05-08 16:01:10 |
| R65.htm | 11677 | 2019-05-08 16:01:10 |
| R66.htm | 4105 | 2019-05-08 16:01:10 |
| R67.htm | 27629 | 2019-05-08 16:01:10 |
| R68.htm | 7969 | 2019-05-08 16:01:10 |
| R69.htm | 8376 | 2019-05-08 16:01:10 |
| R7.htm | 107720 | 2019-05-08 16:01:10 |
| R70.htm | 14086 | 2019-05-08 16:01:10 |
| R71.htm | 57937 | 2019-05-08 16:01:10 |
| R8.htm | 72769 | 2019-05-08 16:01:10 |
| R9.htm | 111945 | 2019-05-08 16:01:10 |
| report.css | 2767 | 2019-05-08 16:01:10 |
| Show.js | 1085 | 2019-05-08 16:01:10 |
| swx-20190331.xsd | 69920 | 2019-05-08 16:01:10 |
| swx-20190331_cal.xml | 161039 | 2019-05-08 16:01:10 |
| swx-20190331_def.xml | 466371 | 2019-05-08 16:01:10 |
| swx-20190331_lab.xml | 865775 | 2019-05-08 16:01:10 |
| swx-20190331_pre.xml | 564978 | 2019-05-08 16:01:10 |
| swx331201910q.htm | 3319901 | 2019-05-08 16:01:10 |
| swx331201910q_htm.xml | 3942488 | 2019-05-08 16:01:10 |
| swxexhibit1001.htm | 153375 | 2019-05-08 16:01:10 |
| swxexhibit1002.htm | 101044 | 2019-05-08 16:01:10 |
| swxexhibit1003.htm | 48989 | 2019-05-08 16:01:10 |
| swxexhibit3101q1.htm | 26017 | 2019-05-08 16:01:10 |
| swxexhibit3102q1.htm | 26163 | 2019-05-08 16:01:10 |
| swxexhibit3201q1.htm | 11174 | 2019-05-08 16:01:10 |
| swxexhibit3202q1.htm | 11138 | 2019-05-08 16:01:10 |