Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000091928-20-000022-index-headers.html | 2020-05-06 17:26:04 | |
| 0000091928-20-000022-index.html | 2020-05-06 17:26:04 | |
| 0000091928-20-000022.txt | 2020-05-06 17:26:04 | |
 0000091928-20-000022-xbrl.zip | 603620 | 2020-05-06 17:26:04 |
| FilingSummary.xml | 53437 | 2020-05-06 17:26:04 |
| Financial_Report.xlsx | 151248 | 2020-05-06 17:26:04 |
| MetaLinks.json | 998034 | 2020-05-06 17:26:04 |
| R1.htm | 67113 | 2020-05-06 17:26:04 |
| R10.htm | 14245 | 2020-05-06 17:26:04 |
| R11.htm | 33139 | 2020-05-06 17:26:04 |
| R12.htm | 217193 | 2020-05-06 17:26:04 |
| R13.htm | 12108 | 2020-05-06 17:26:04 |
| R14.htm | 175817 | 2020-05-06 17:26:04 |
| R15.htm | 55848 | 2020-05-06 17:26:04 |
| R16.htm | 64565 | 2020-05-06 17:26:04 |
| R17.htm | 14146 | 2020-05-06 17:26:04 |
| R18.htm | 240827 | 2020-05-06 17:26:04 |
| R19.htm | 199075 | 2020-05-06 17:26:04 |
| R2.htm | 92409 | 2020-05-06 17:26:04 |
| R20.htm | 7410 | 2020-05-06 17:26:04 |
| R21.htm | 54441 | 2020-05-06 17:26:04 |
| R22.htm | 219770 | 2020-05-06 17:26:04 |
| R23.htm | 19444 | 2020-05-06 17:26:04 |
| R24.htm | 36845 | 2020-05-06 17:26:04 |
| R25.htm | 81051 | 2020-05-06 17:26:04 |
| R26.htm | 6918 | 2020-05-06 17:26:04 |
| R27.htm | 83030 | 2020-05-06 17:26:04 |
| R28.htm | 58108 | 2020-05-06 17:26:04 |
| R29.htm | 68458 | 2020-05-06 17:26:04 |
| R3.htm | 21161 | 2020-05-06 17:26:04 |
| R30.htm | 84783 | 2020-05-06 17:26:04 |
| R31.htm | 9461 | 2020-05-06 17:26:04 |
| R32.htm | 44480 | 2020-05-06 17:26:04 |
| R33.htm | 210949 | 2020-05-06 17:26:04 |
| R34.htm | 167385 | 2020-05-06 17:26:04 |
| R35.htm | 52821 | 2020-05-06 17:26:04 |
| R36.htm | 55553 | 2020-05-06 17:26:04 |
| R37.htm | 352158 | 2020-05-06 17:26:04 |
| R38.htm | 200541 | 2020-05-06 17:26:04 |
| R39.htm | 56687 | 2020-05-06 17:26:04 |
| R4.htm | 49409 | 2020-05-06 17:26:04 |
| R40.htm | 215895 | 2020-05-06 17:26:04 |
| R41.htm | 17038 | 2020-05-06 17:26:04 |
| R42.htm | 28647 | 2020-05-06 17:26:04 |
| R43.htm | 28512 | 2020-05-06 17:26:04 |
| R44.htm | 63179 | 2020-05-06 17:26:04 |
| R45.htm | 42123 | 2020-05-06 17:26:04 |
| R46.htm | 10128 | 2020-05-06 17:26:04 |
| R47.htm | 74066 | 2020-05-06 17:26:04 |
| R48.htm | 26686 | 2020-05-06 17:26:04 |
| R49.htm | 13419 | 2020-05-06 17:26:04 |
| R5.htm | 194259 | 2020-05-06 17:26:04 |
| R50.htm | 33559 | 2020-05-06 17:26:04 |
| R51.htm | 45389 | 2020-05-06 17:26:04 |
| R52.htm | 20457 | 2020-05-06 17:26:04 |
| R53.htm | 24252 | 2020-05-06 17:26:04 |
| R54.htm | 9460 | 2020-05-06 17:26:04 |
| R55.htm | 36016 | 2020-05-06 17:26:04 |
| R56.htm | 53633 | 2020-05-06 17:26:04 |
| R57.htm | 14126 | 2020-05-06 17:26:04 |
| R58.htm | 82683 | 2020-05-06 17:26:04 |
| R59.htm | 53526 | 2020-05-06 17:26:04 |
| R6.htm | 30586 | 2020-05-06 17:26:04 |
| R60.htm | 93980 | 2020-05-06 17:26:04 |
| R61.htm | 41996 | 2020-05-06 17:26:04 |
| R62.htm | 48135 | 2020-05-06 17:26:04 |
| R63.htm | 31441 | 2020-05-06 17:26:04 |
| R64.htm | 19142 | 2020-05-06 17:26:04 |
| R65.htm | 41745 | 2020-05-06 17:26:04 |
| R66.htm | 85207 | 2020-05-06 17:26:04 |
| R67.htm | 49891 | 2020-05-06 17:26:04 |
| R68.htm | 45093 | 2020-05-06 17:26:04 |
| R69.htm | 32372 | 2020-05-06 17:26:04 |
| R7.htm | 94946 | 2020-05-06 17:26:04 |
| R70.htm | 51066 | 2020-05-06 17:26:04 |
| R71.htm | 27449 | 2020-05-06 17:26:04 |
| R72.htm | 42903 | 2020-05-06 17:26:04 |
| R73.htm | 38007 | 2020-05-06 17:26:04 |
| R74.htm | 14626 | 2020-05-06 17:26:04 |
| R75.htm | 48904 | 2020-05-06 17:26:04 |
| R76.htm | 44387 | 2020-05-06 17:26:04 |
| R77.htm | 7285 | 2020-05-06 17:26:04 |
| R78.htm | 75604 | 2020-05-06 17:26:04 |
| R79.htm | 16770 | 2020-05-06 17:26:04 |
| R8.htm | 75937 | 2020-05-06 17:26:04 |
| R80.htm | 13052 | 2020-05-06 17:26:04 |
| R81.htm | 27679 | 2020-05-06 17:26:04 |
| R82.htm | 24881 | 2020-05-06 17:26:04 |
| R83.htm | 14527 | 2020-05-06 17:26:04 |
| R84.htm | 51668 | 2020-05-06 17:26:04 |
| R85.htm | 31603 | 2020-05-06 17:26:04 |
| R86.htm | 39188 | 2020-05-06 17:26:04 |
| R9.htm | 71108 | 2020-05-06 17:26:04 |
| report.css | 2768 | 2020-05-06 17:26:04 |
| Show.js | 1085 | 2020-05-06 17:26:04 |
| sjg-33120ex313.htm | 13899 | 2020-05-06 17:26:04 |
| sjg-33120ex314.htm | 13622 | 2020-05-06 17:26:04 |
| sjg-33120ex323.htm | 5965 | 2020-05-06 17:26:04 |
| sjg-33120ex324.htm | 5704 | 2020-05-06 17:26:04 |
| sji-20200331.htm | 4688970 | 2020-05-06 17:26:04 |
| sji-20200331.xsd | 95850 | 2020-05-06 17:26:04 |
| sji-20200331_cal.xml | 144996 | 2020-05-06 17:26:04 |
| sji-20200331_def.xml | 757687 | 2020-05-06 17:26:04 |
| sji-20200331_htm.xml | 4974584 | 2020-05-06 17:26:04 |
| sji-20200331_lab.xml | 1118910 | 2020-05-06 17:26:04 |
| sji-20200331_pre.xml | 827950 | 2020-05-06 17:26:04 |
| sji-33120xex311.htm | 16305 | 2020-05-06 17:26:04 |
| sji-33120xex312.htm | 15932 | 2020-05-06 17:26:04 |
| sji-33120xex321.htm | 6205 | 2020-05-06 17:26:04 |
| sji-33120xex322.htm | 6095 | 2020-05-06 17:26:04 |