Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000092521-17-000006-index-headers.html | 2017-04-28 16:05:55 | |
| 0000092521-17-000006-index.html | 2017-04-28 16:05:55 | |
| 0000092521-17-000006.txt | 2017-04-28 16:05:55 | |
 0000092521-17-000006-xbrl.zip | 171984 | 2017-04-28 16:05:55 |
| FilingSummary.xml | 29085 | 2017-04-28 16:05:55 |
| Financial_Report.xlsx | 60073 | 2017-04-28 16:05:55 |
| R1.htm | 25788 | 2017-04-28 16:05:55 |
| R10.htm | 6220 | 2017-04-28 16:05:55 |
| R11.htm | 13912 | 2017-04-28 16:05:55 |
| R12.htm | 37988 | 2017-04-28 16:05:55 |
| R13.htm | 36817 | 2017-04-28 16:05:55 |
| R14.htm | 25756 | 2017-04-28 16:05:55 |
| R15.htm | 24509 | 2017-04-28 16:05:55 |
| R16.htm | 43549 | 2017-04-28 16:05:55 |
| R17.htm | 236745 | 2017-04-28 16:05:55 |
| R18.htm | 16186 | 2017-04-28 16:05:55 |
| R19.htm | 44209 | 2017-04-28 16:05:55 |
| R2.htm | 40214 | 2017-04-28 16:05:55 |
| R20.htm | 75367 | 2017-04-28 16:05:55 |
| R21.htm | 42571 | 2017-04-28 16:05:55 |
| R22.htm | 32959 | 2017-04-28 16:05:55 |
| R23.htm | 13467 | 2017-04-28 16:05:55 |
| R24.htm | 44684 | 2017-04-28 16:05:55 |
| R25.htm | 221597 | 2017-04-28 16:05:55 |
| R26.htm | 15682 | 2017-04-28 16:05:55 |
| R27.htm | 42132 | 2017-04-28 16:05:55 |
| R28.htm | 74955 | 2017-04-28 16:05:55 |
| R29.htm | 9707 | 2017-04-28 16:05:55 |
| R3.htm | 4480 | 2017-04-28 16:05:55 |
| R30.htm | 8998 | 2017-04-28 16:05:55 |
| R31.htm | 15034 | 2017-04-28 16:05:55 |
| R32.htm | 36455 | 2017-04-28 16:05:55 |
| R33.htm | 64200 | 2017-04-28 16:05:55 |
| R34.htm | 6981 | 2017-04-28 16:05:55 |
| R35.htm | 9476 | 2017-04-28 16:05:55 |
| R36.htm | 20386 | 2017-04-28 16:05:55 |
| R37.htm | 10893 | 2017-04-28 16:05:55 |
| R38.htm | 16135 | 2017-04-28 16:05:55 |
| R39.htm | 22560 | 2017-04-28 16:05:55 |
| R4.htm | 20658 | 2017-04-28 16:05:55 |
| R40.htm | 21201 | 2017-04-28 16:05:55 |
| R41.htm | 76707 | 2017-04-28 16:05:55 |
| R42.htm | 19525 | 2017-04-28 16:05:55 |
| R43.htm | 8392 | 2017-04-28 16:05:55 |
| R44.htm | 9673 | 2017-04-28 16:05:55 |
| R45.htm | 33997 | 2017-04-28 16:05:55 |
| R46.htm | 24106 | 2017-04-28 16:05:55 |
| R47.htm | 34152 | 2017-04-28 16:05:55 |
| R5.htm | 7964 | 2017-04-28 16:05:55 |
| R6.htm | 84552 | 2017-04-28 16:05:55 |
| R7.htm | 110180 | 2017-04-28 16:05:55 |
| R8.htm | 8547 | 2017-04-28 16:05:55 |
| R9.htm | 9030 | 2017-04-28 16:05:55 |
| report.css | 2767 | 2017-04-28 16:05:55 |
| Show.js | 1410 | 2017-04-28 16:05:55 |
| sps-20170331.xml | 1353237 | 2017-04-28 16:05:55 |
| sps-20170331.xsd | 46564 | 2017-04-28 16:05:55 |
| sps-20170331_cal.xml | 83128 | 2017-04-28 16:05:55 |
| sps-20170331_def.xml | 192706 | 2017-04-28 16:05:55 |
| sps-20170331_lab.xml | 611791 | 2017-04-28 16:05:55 |
| sps-20170331_pre.xml | 325418 | 2017-04-28 16:05:55 |
| sps3311710q.htm | 800031 | 2017-04-28 16:05:55 |
| spsex3101q12017.htm | 12697 | 2017-04-28 16:05:55 |
| spsex3102q12017.htm | 12704 | 2017-04-28 16:05:55 |
| spsex3201q12017.htm | 10283 | 2017-04-28 16:05:55 |
| spsex9901q12017.htm | 15208 | 2017-04-28 16:05:55 |