Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001059262-18-000008-index-headers.html | 2018-02-22 17:10:31 | |
| 0001059262-18-000008-index.html | 2018-02-22 17:10:31 | |
| 0001059262-18-000008.txt | 2018-02-22 17:10:31 | |
 0001059262-18-000008-xbrl.zip | 400482 | 2018-02-22 17:10:31 |
 chart-5b0a03d40a5d5a86906.jpg | 80927 | 2018-02-22 17:10:31 |
| FilingSummary.xml | 59731 | 2018-02-22 17:10:31 |
| Financial_Report.xlsx | 148861 | 2018-02-22 17:10:31 |
 g877392a03.jpg | 10332 | 2018-02-22 17:10:31 |
| R1.htm | 28219 | 2018-02-22 17:10:31 |
| R10.htm | 28285 | 2018-02-22 17:10:31 |
| R100.htm | 15217 | 2018-02-22 17:10:31 |
| R101.htm | 14777 | 2018-02-22 17:10:31 |
| R11.htm | 102524 | 2018-02-22 17:10:31 |
| R12.htm | 37403 | 2018-02-22 17:10:31 |
| R13.htm | 29747 | 2018-02-22 17:10:31 |
| R14.htm | 58050 | 2018-02-22 17:10:31 |
| R15.htm | 62591 | 2018-02-22 17:10:31 |
| R16.htm | 25719 | 2018-02-22 17:10:31 |
| R17.htm | 84778 | 2018-02-22 17:10:31 |
| R18.htm | 50549 | 2018-02-22 17:10:31 |
| R19.htm | 18297 | 2018-02-22 17:10:31 |
| R2.htm | 101429 | 2018-02-22 17:10:31 |
| R20.htm | 124633 | 2018-02-22 17:10:31 |
| R21.htm | 16176 | 2018-02-22 17:10:31 |
| R22.htm | 47400 | 2018-02-22 17:10:31 |
| R23.htm | 43271 | 2018-02-22 17:10:31 |
| R24.htm | 26613 | 2018-02-22 17:10:31 |
| R25.htm | 8506 | 2018-02-22 17:10:31 |
| R26.htm | 208340 | 2018-02-22 17:10:31 |
| R27.htm | 228185 | 2018-02-22 17:10:31 |
| R28.htm | 6189 | 2018-02-22 17:10:31 |
| R29.htm | 40270 | 2018-02-22 17:10:31 |
| R3.htm | 19317 | 2018-02-22 17:10:31 |
| R30.htm | 147452 | 2018-02-22 17:10:31 |
| R31.htm | 16415 | 2018-02-22 17:10:31 |
| R32.htm | 26338 | 2018-02-22 17:10:31 |
| R33.htm | 106896 | 2018-02-22 17:10:31 |
| R34.htm | 36488 | 2018-02-22 17:10:31 |
| R35.htm | 32042 | 2018-02-22 17:10:31 |
| R36.htm | 67478 | 2018-02-22 17:10:31 |
| R37.htm | 67009 | 2018-02-22 17:10:31 |
| R38.htm | 21304 | 2018-02-22 17:10:31 |
| R39.htm | 77028 | 2018-02-22 17:10:31 |
| R4.htm | 74986 | 2018-02-22 17:10:31 |
| R40.htm | 36183 | 2018-02-22 17:10:31 |
| R41.htm | 17395 | 2018-02-22 17:10:31 |
| R42.htm | 124829 | 2018-02-22 17:10:31 |
| R43.htm | 12985 | 2018-02-22 17:10:31 |
| R44.htm | 31483 | 2018-02-22 17:10:31 |
| R45.htm | 32601 | 2018-02-22 17:10:31 |
| R46.htm | 26065 | 2018-02-22 17:10:31 |
| R47.htm | 203932 | 2018-02-22 17:10:31 |
| R48.htm | 226423 | 2018-02-22 17:10:31 |
| R49.htm | 189987 | 2018-02-22 17:10:31 |
| R5.htm | 15790 | 2018-02-22 17:10:31 |
| R50.htm | 86669 | 2018-02-22 17:10:31 |
| R51.htm | 10980 | 2018-02-22 17:10:31 |
| R52.htm | 26026 | 2018-02-22 17:10:31 |
| R53.htm | 71671 | 2018-02-22 17:10:31 |
| R54.htm | 9550 | 2018-02-22 17:10:31 |
| R55.htm | 38106 | 2018-02-22 17:10:31 |
| R56.htm | 7200 | 2018-02-22 17:10:31 |
| R57.htm | 8729 | 2018-02-22 17:10:31 |
| R58.htm | 7211 | 2018-02-22 17:10:31 |
| R59.htm | 34709 | 2018-02-22 17:10:31 |
| R6.htm | 74162 | 2018-02-22 17:10:31 |
| R60.htm | 6715 | 2018-02-22 17:10:31 |
| R61.htm | 8563 | 2018-02-22 17:10:31 |
| R62.htm | 14896 | 2018-02-22 17:10:31 |
| R63.htm | 6800 | 2018-02-22 17:10:31 |
| R64.htm | 27021 | 2018-02-22 17:10:31 |
| R65.htm | 5502 | 2018-02-22 17:10:31 |
| R66.htm | 22420 | 2018-02-22 17:10:31 |
| R67.htm | 18187 | 2018-02-22 17:10:31 |
| R68.htm | 49487 | 2018-02-22 17:10:31 |
| R69.htm | 10232 | 2018-02-22 17:10:31 |
| R7.htm | 101694 | 2018-02-22 17:10:31 |
| R70.htm | 10233 | 2018-02-22 17:10:31 |
| R71.htm | 12842 | 2018-02-22 17:10:31 |
| R72.htm | 7511 | 2018-02-22 17:10:31 |
| R73.htm | 21212 | 2018-02-22 17:10:31 |
| R74.htm | 33866 | 2018-02-22 17:10:31 |
| R75.htm | 14713 | 2018-02-22 17:10:31 |
| R76.htm | 19305 | 2018-02-22 17:10:31 |
| R77.htm | 12756 | 2018-02-22 17:10:31 |
| R78.htm | 27235 | 2018-02-22 17:10:31 |
| R79.htm | 100577 | 2018-02-22 17:10:31 |
| R8.htm | 99595 | 2018-02-22 17:10:31 |
| R80.htm | 8476 | 2018-02-22 17:10:31 |
| R81.htm | 16215 | 2018-02-22 17:10:31 |
| R82.htm | 41110 | 2018-02-22 17:10:31 |
| R83.htm | 21210 | 2018-02-22 17:10:31 |
| R84.htm | 41123 | 2018-02-22 17:10:31 |
| R85.htm | 10249 | 2018-02-22 17:10:31 |
| R86.htm | 44508 | 2018-02-22 17:10:31 |
| R87.htm | 41668 | 2018-02-22 17:10:31 |
| R88.htm | 15009 | 2018-02-22 17:10:31 |
| R89.htm | 22199 | 2018-02-22 17:10:31 |
| R9.htm | 43651 | 2018-02-22 17:10:31 |
| R90.htm | 9884 | 2018-02-22 17:10:31 |
| R91.htm | 10804 | 2018-02-22 17:10:31 |
| R92.htm | 25092 | 2018-02-22 17:10:31 |
| R93.htm | 32344 | 2018-02-22 17:10:31 |
| R94.htm | 8179 | 2018-02-22 17:10:31 |
| R95.htm | 9331 | 2018-02-22 17:10:31 |
| R96.htm | 18284 | 2018-02-22 17:10:31 |
| R97.htm | 11636 | 2018-02-22 17:10:31 |
| R98.htm | 98651 | 2018-02-22 17:10:31 |
| R99.htm | 90908 | 2018-02-22 17:10:31 |
| report.css | 2768 | 2018-02-22 17:10:31 |
| Show.js | 1411 | 2018-02-22 17:10:31 |
| sp-20171231.xml | 3392163 | 2018-02-22 17:10:31 |
| sp-20171231.xsd | 103539 | 2018-02-22 17:10:31 |
| sp-20171231_cal.xml | 167166 | 2018-02-22 17:10:31 |
| sp-20171231_def.xml | 498036 | 2018-02-22 17:10:31 |
| sp-20171231_lab.xml | 1227365 | 2018-02-22 17:10:31 |
| sp-20171231_pre.xml | 772120 | 2018-02-22 17:10:31 |
| sp1231201710-k.htm | 3684471 | 2018-02-22 17:10:31 |
| sp12312017ex1071.htm | 17689 | 2018-02-22 17:10:31 |
| sp12312017ex21.htm | 28306 | 2018-02-22 17:10:31 |
| sp12312017ex23.htm | 3014 | 2018-02-22 17:10:31 |
| sp12312017ex311.htm | 11019 | 2018-02-22 17:10:31 |
| sp12312017ex312.htm | 11134 | 2018-02-22 17:10:31 |
| sp12312017ex313.htm | 10971 | 2018-02-22 17:10:31 |
| sp12312017ex32.htm | 19010 | 2018-02-22 17:10:31 |