Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001059262-19-000015-index-headers.html | 2019-02-27 16:38:51 | |
| 0001059262-19-000015-index.html | 2019-02-27 16:38:51 | |
| 0001059262-19-000015.txt | 2019-02-27 16:38:51 | |
 0001059262-19-000015-xbrl.zip | 394790 | 2019-02-27 16:38:51 |
 chart-79ea042c25f45498b96.jpg | 85076 | 2019-02-27 16:38:51 |
| FilingSummary.xml | 63778 | 2019-02-27 16:38:51 |
| Financial_Report.xlsx | 155369 | 2019-02-27 16:38:51 |
 g877392a04.jpg | 10332 | 2019-02-27 16:38:51 |
| R1.htm | 33854 | 2019-02-27 16:38:51 |
| R10.htm | 59484 | 2019-02-27 16:38:51 |
| R100.htm | 10797 | 2019-02-27 16:38:51 |
| R101.htm | 15430 | 2019-02-27 16:38:51 |
| R102.htm | 32314 | 2019-02-27 16:38:51 |
| R103.htm | 8413 | 2019-02-27 16:38:51 |
| R104.htm | 9333 | 2019-02-27 16:38:51 |
| R105.htm | 22096 | 2019-02-27 16:38:51 |
| R106.htm | 18598 | 2019-02-27 16:38:51 |
| R107.htm | 100174 | 2019-02-27 16:38:51 |
| R108.htm | 84838 | 2019-02-27 16:38:51 |
| R109.htm | 14079 | 2019-02-27 16:38:51 |
| R11.htm | 82193 | 2019-02-27 16:38:51 |
| R12.htm | 28283 | 2019-02-27 16:38:51 |
| R13.htm | 102713 | 2019-02-27 16:38:51 |
| R14.htm | 37395 | 2019-02-27 16:38:51 |
| R15.htm | 82223 | 2019-02-27 16:38:51 |
| R16.htm | 63765 | 2019-02-27 16:38:51 |
| R17.htm | 62633 | 2019-02-27 16:38:51 |
| R18.htm | 25562 | 2019-02-27 16:38:51 |
| R19.htm | 30542 | 2019-02-27 16:38:51 |
| R2.htm | 100568 | 2019-02-27 16:38:51 |
| R20.htm | 45281 | 2019-02-27 16:38:51 |
| R21.htm | 11076 | 2019-02-27 16:38:51 |
| R22.htm | 17392 | 2019-02-27 16:38:51 |
| R23.htm | 125673 | 2019-02-27 16:38:51 |
| R24.htm | 47644 | 2019-02-27 16:38:51 |
| R25.htm | 42776 | 2019-02-27 16:38:51 |
| R26.htm | 29603 | 2019-02-27 16:38:51 |
| R27.htm | 10309 | 2019-02-27 16:38:51 |
| R28.htm | 210644 | 2019-02-27 16:38:51 |
| R29.htm | 229585 | 2019-02-27 16:38:51 |
| R3.htm | 19289 | 2019-02-27 16:38:51 |
| R30.htm | 38413 | 2019-02-27 16:38:51 |
| R31.htm | 202800 | 2019-02-27 16:38:51 |
| R32.htm | 102444 | 2019-02-27 16:38:51 |
| R33.htm | 34371 | 2019-02-27 16:38:51 |
| R34.htm | 16493 | 2019-02-27 16:38:51 |
| R35.htm | 111853 | 2019-02-27 16:38:51 |
| R36.htm | 26336 | 2019-02-27 16:38:51 |
| R37.htm | 96056 | 2019-02-27 16:38:51 |
| R38.htm | 36477 | 2019-02-27 16:38:51 |
| R39.htm | 29900 | 2019-02-27 16:38:51 |
| R4.htm | 68519 | 2019-02-27 16:38:51 |
| R40.htm | 73186 | 2019-02-27 16:38:51 |
| R41.htm | 67051 | 2019-02-27 16:38:51 |
| R42.htm | 23724 | 2019-02-27 16:38:51 |
| R43.htm | 21375 | 2019-02-27 16:38:51 |
| R44.htm | 36124 | 2019-02-27 16:38:51 |
| R45.htm | 9839 | 2019-02-27 16:38:51 |
| R46.htm | 13029 | 2019-02-27 16:38:51 |
| R47.htm | 125148 | 2019-02-27 16:38:51 |
| R48.htm | 31481 | 2019-02-27 16:38:51 |
| R49.htm | 31970 | 2019-02-27 16:38:51 |
| R5.htm | 19176 | 2019-02-27 16:38:51 |
| R50.htm | 28852 | 2019-02-27 16:38:51 |
| R51.htm | 203887 | 2019-02-27 16:38:51 |
| R52.htm | 226876 | 2019-02-27 16:38:51 |
| R53.htm | 147016 | 2019-02-27 16:38:51 |
| R54.htm | 32728 | 2019-02-27 16:38:51 |
| R55.htm | 72746 | 2019-02-27 16:38:51 |
| R56.htm | 20661 | 2019-02-27 16:38:51 |
| R57.htm | 30162 | 2019-02-27 16:38:51 |
| R58.htm | 21614 | 2019-02-27 16:38:51 |
| R59.htm | 7078 | 2019-02-27 16:38:51 |
| R6.htm | 61653 | 2019-02-27 16:38:51 |
| R60.htm | 10543 | 2019-02-27 16:38:51 |
| R61.htm | 11158 | 2019-02-27 16:38:51 |
| R62.htm | 8658 | 2019-02-27 16:38:51 |
| R63.htm | 18911 | 2019-02-27 16:38:51 |
| R64.htm | 9817 | 2019-02-27 16:38:51 |
| R65.htm | 8906 | 2019-02-27 16:38:51 |
| R66.htm | 9167 | 2019-02-27 16:38:51 |
| R67.htm | 4648 | 2019-02-27 16:38:51 |
| R68.htm | 29907 | 2019-02-27 16:38:51 |
| R69.htm | 64591 | 2019-02-27 16:38:51 |
| R7.htm | 102323 | 2019-02-27 16:38:51 |
| R70.htm | 9545 | 2019-02-27 16:38:51 |
| R71.htm | 36705 | 2019-02-27 16:38:51 |
| R72.htm | 9382 | 2019-02-27 16:38:51 |
| R73.htm | 8726 | 2019-02-27 16:38:51 |
| R74.htm | 36166 | 2019-02-27 16:38:51 |
| R75.htm | 4983 | 2019-02-27 16:38:51 |
| R76.htm | 8433 | 2019-02-27 16:38:51 |
| R77.htm | 14967 | 2019-02-27 16:38:51 |
| R78.htm | 6399 | 2019-02-27 16:38:51 |
| R79.htm | 30390 | 2019-02-27 16:38:51 |
| R8.htm | 159749 | 2019-02-27 16:38:51 |
| R80.htm | 5494 | 2019-02-27 16:38:51 |
| R81.htm | 22400 | 2019-02-27 16:38:51 |
| R82.htm | 18448 | 2019-02-27 16:38:51 |
| R83.htm | 12821 | 2019-02-27 16:38:51 |
| R84.htm | 49968 | 2019-02-27 16:38:51 |
| R85.htm | 20520 | 2019-02-27 16:38:51 |
| R86.htm | 17491 | 2019-02-27 16:38:51 |
| R87.htm | 12699 | 2019-02-27 16:38:51 |
| R88.htm | 27191 | 2019-02-27 16:38:51 |
| R89.htm | 52613 | 2019-02-27 16:38:51 |
| R9.htm | 59409 | 2019-02-27 16:38:51 |
| R90.htm | 7049 | 2019-02-27 16:38:51 |
| R91.htm | 8836 | 2019-02-27 16:38:51 |
| R92.htm | 21169 | 2019-02-27 16:38:51 |
| R93.htm | 11927 | 2019-02-27 16:38:51 |
| R94.htm | 41319 | 2019-02-27 16:38:51 |
| R95.htm | 42840 | 2019-02-27 16:38:51 |
| R96.htm | 43631 | 2019-02-27 16:38:51 |
| R97.htm | 41889 | 2019-02-27 16:38:51 |
| R98.htm | 22169 | 2019-02-27 16:38:51 |
| R99.htm | 9881 | 2019-02-27 16:38:51 |
| R9999.htm | 4146 | 2019-02-27 16:38:51 |
| report.css | 2768 | 2019-02-27 16:38:51 |
| Show.js | 1086 | 2019-02-27 16:38:51 |
| sp-20181231.xml | 3658757 | 2019-02-27 16:38:51 |
| sp-20181231.xsd | 97548 | 2019-02-27 16:38:51 |
| sp-20181231_cal.xml | 166052 | 2019-02-27 16:38:51 |
| sp-20181231_def.xml | 441813 | 2019-02-27 16:38:51 |
| sp-20181231_lab.xml | 1138920 | 2019-02-27 16:38:51 |
| sp-20181231_pre.xml | 702345 | 2019-02-27 16:38:51 |
| sp1231201810-k.htm | 3507592 | 2019-02-27 16:38:51 |
| sp12312018ex1011.htm | 52586 | 2019-02-27 16:38:51 |
| sp12312018ex108.htm | 180333 | 2019-02-27 16:38:51 |
| sp12312018ex21.htm | 24584 | 2019-02-27 16:38:51 |
| sp12312018ex23.htm | 2640 | 2019-02-27 16:38:51 |
| sp12312018ex311.htm | 10967 | 2019-02-27 16:38:51 |
| sp12312018ex312.htm | 11134 | 2019-02-27 16:38:51 |
| sp12312018ex313.htm | 10971 | 2019-02-27 16:38:51 |
| sp12312018ex32.htm | 18897 | 2019-02-27 16:38:51 |