Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-135583-index-headers.html | 2020-05-07 07:21:03 | |
| 0001193125-20-135583-index.html | 2020-05-07 07:21:03 | |
| 0001193125-20-135583.txt | 2020-05-07 07:21:03 | |
 0001193125-20-135583-xbrl.zip | 104171 | 2020-05-07 07:21:03 |
| d897672d10q.htm | 746094 | 2020-05-07 07:21:03 |
| d897672dex311.htm | 6801 | 2020-05-07 07:21:03 |
| d897672dex312.htm | 6788 | 2020-05-07 07:21:03 |
| d897672dex321.htm | 4395 | 2020-05-07 07:21:03 |
| d897672dex322.htm | 4310 | 2020-05-07 07:21:03 |
| FilingSummary.xml | 31330 | 2020-05-07 07:21:03 |
| Financial_Report.xlsx | 52928 | 2020-05-07 07:21:03 |
| R1.htm | 39119 | 2020-05-07 07:21:03 |
| R10.htm | 97196 | 2020-05-07 07:21:03 |
| R11.htm | 70393 | 2020-05-07 07:21:03 |
| R12.htm | 27729 | 2020-05-07 07:21:03 |
| R13.htm | 8917 | 2020-05-07 07:21:03 |
| R14.htm | 14307 | 2020-05-07 07:21:03 |
| R15.htm | 23949 | 2020-05-07 07:21:03 |
| R16.htm | 8312 | 2020-05-07 07:21:03 |
| R17.htm | 8145 | 2020-05-07 07:21:03 |
| R18.htm | 70204 | 2020-05-07 07:21:03 |
| R19.htm | 6538 | 2020-05-07 07:21:03 |
| R2.htm | 55137 | 2020-05-07 07:21:03 |
| R20.htm | 12309 | 2020-05-07 07:21:03 |
| R21.htm | 18898 | 2020-05-07 07:21:03 |
| R22.htm | 94420 | 2020-05-07 07:21:03 |
| R23.htm | 75769 | 2020-05-07 07:21:03 |
| R24.htm | 27772 | 2020-05-07 07:21:03 |
| R25.htm | 26895 | 2020-05-07 07:21:03 |
| R26.htm | 68377 | 2020-05-07 07:21:03 |
| R27.htm | 4019 | 2020-05-07 07:21:03 |
| R28.htm | 14916 | 2020-05-07 07:21:03 |
| R29.htm | 25424 | 2020-05-07 07:21:03 |
| R3.htm | 18845 | 2020-05-07 07:21:03 |
| R30.htm | 21328 | 2020-05-07 07:21:03 |
| R31.htm | 30473 | 2020-05-07 07:21:03 |
| R32.htm | 12098 | 2020-05-07 07:21:03 |
| R33.htm | 12535 | 2020-05-07 07:21:03 |
| R34.htm | 13169 | 2020-05-07 07:21:03 |
| R35.htm | 18884 | 2020-05-07 07:21:03 |
| R36.htm | 15797 | 2020-05-07 07:21:03 |
| R37.htm | 4778 | 2020-05-07 07:21:03 |
| R38.htm | 13282 | 2020-05-07 07:21:03 |
| R39.htm | 11267 | 2020-05-07 07:21:03 |
| R4.htm | 32497 | 2020-05-07 07:21:03 |
| R40.htm | 13888 | 2020-05-07 07:21:03 |
| R41.htm | 29764 | 2020-05-07 07:21:03 |
| R42.htm | 44915 | 2020-05-07 07:21:03 |
| R43.htm | 20792 | 2020-05-07 07:21:03 |
| R44.htm | 25380 | 2020-05-07 07:21:03 |
| R45.htm | 19281 | 2020-05-07 07:21:03 |
| R46.htm | 10016 | 2020-05-07 07:21:03 |
| R47.htm | 19836 | 2020-05-07 07:21:03 |
| R48.htm | 32919 | 2020-05-07 07:21:03 |
| R49.htm | 54744 | 2020-05-07 07:21:03 |
| R5.htm | 40516 | 2020-05-07 07:21:03 |
| R50.htm | 5003 | 2020-05-07 07:21:03 |
| R6.htm | 67546 | 2020-05-07 07:21:03 |
| R7.htm | 11720 | 2020-05-07 07:21:03 |
| R8.htm | 9599 | 2020-05-07 07:21:03 |
| R9.htm | 20012 | 2020-05-07 07:21:03 |
| report.css | 2767 | 2020-05-07 07:21:03 |
| Show.js | 1085 | 2020-05-07 07:21:03 |
| srra-20200331.xml | 876984 | 2020-05-07 07:21:03 |
| srra-20200331.xsd | 42846 | 2020-05-07 07:21:03 |
| srra-20200331_cal.xml | 33868 | 2020-05-07 07:21:03 |
| srra-20200331_def.xml | 193869 | 2020-05-07 07:21:03 |
| srra-20200331_lab.xml | 361625 | 2020-05-07 07:21:03 |
| srra-20200331_pre.xml | 289631 | 2020-05-07 07:21:03 |