Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-17-163386-index-headers.html | 2017-05-09 07:18:54 | |
| 0001193125-17-163386-index.html | 2017-05-09 07:18:54 | |
| 0001193125-17-163386.txt | 2017-05-09 07:18:54 | |
 0001193125-17-163386-xbrl.zip | 91478 | 2017-05-09 07:18:54 |
| d354507d10q.htm | 323799 | 2017-05-09 07:18:54 |
| d354507dex101.htm | 21625 | 2017-05-09 07:18:54 |
| d354507dex311.htm | 6288 | 2017-05-09 07:18:54 |
| d354507dex312.htm | 6282 | 2017-05-09 07:18:54 |
| d354507dex321.htm | 3650 | 2017-05-09 07:18:54 |
| d354507dex322.htm | 3644 | 2017-05-09 07:18:54 |
| FilingSummary.xml | 30366 | 2017-05-09 07:18:54 |
| Financial_Report.xlsx | 49442 | 2017-05-09 07:18:54 |
| R1.htm | 21952 | 2017-05-09 07:18:54 |
| R10.htm | 12910 | 2017-05-09 07:18:54 |
| R11.htm | 27085 | 2017-05-09 07:18:54 |
| R12.htm | 36503 | 2017-05-09 07:18:54 |
| R13.htm | 22301 | 2017-05-09 07:18:54 |
| R14.htm | 15935 | 2017-05-09 07:18:54 |
| R15.htm | 43911 | 2017-05-09 07:18:54 |
| R16.htm | 8494 | 2017-05-09 07:18:54 |
| R17.htm | 15314 | 2017-05-09 07:18:54 |
| R18.htm | 63204 | 2017-05-09 07:18:54 |
| R19.htm | 10840 | 2017-05-09 07:18:54 |
| R2.htm | 48088 | 2017-05-09 07:18:54 |
| R20.htm | 23486 | 2017-05-09 07:18:54 |
| R21.htm | 40121 | 2017-05-09 07:18:54 |
| R22.htm | 9531 | 2017-05-09 07:18:54 |
| R23.htm | 15529 | 2017-05-09 07:18:54 |
| R24.htm | 36620 | 2017-05-09 07:18:54 |
| R25.htm | 12849 | 2017-05-09 07:18:54 |
| R26.htm | 11608 | 2017-05-09 07:18:54 |
| R27.htm | 15601 | 2017-05-09 07:18:54 |
| R28.htm | 10808 | 2017-05-09 07:18:54 |
| R29.htm | 12535 | 2017-05-09 07:18:54 |
| R3.htm | 18963 | 2017-05-09 07:18:54 |
| R30.htm | 18932 | 2017-05-09 07:18:54 |
| R31.htm | 12625 | 2017-05-09 07:18:54 |
| R32.htm | 13399 | 2017-05-09 07:18:54 |
| R33.htm | 18911 | 2017-05-09 07:18:54 |
| R34.htm | 4568 | 2017-05-09 07:18:54 |
| R35.htm | 17932 | 2017-05-09 07:18:54 |
| R36.htm | 30834 | 2017-05-09 07:18:54 |
| R37.htm | 11553 | 2017-05-09 07:18:54 |
| R38.htm | 12170 | 2017-05-09 07:18:54 |
| R39.htm | 10200 | 2017-05-09 07:18:54 |
| R4.htm | 26003 | 2017-05-09 07:18:54 |
| R40.htm | 19846 | 2017-05-09 07:18:54 |
| R41.htm | 44524 | 2017-05-09 07:18:54 |
| R42.htm | 64619 | 2017-05-09 07:18:54 |
| R43.htm | 7050 | 2017-05-09 07:18:54 |
| R44.htm | 19197 | 2017-05-09 07:18:54 |
| R45.htm | 5303 | 2017-05-09 07:18:54 |
| R5.htm | 31708 | 2017-05-09 07:18:54 |
| R6.htm | 4897 | 2017-05-09 07:18:54 |
| R7.htm | 58971 | 2017-05-09 07:18:54 |
| R8.htm | 10913 | 2017-05-09 07:18:54 |
| R9.htm | 36396 | 2017-05-09 07:18:54 |
| report.css | 2767 | 2017-05-09 07:18:54 |
| Show.js | 1410 | 2017-05-09 07:18:54 |
| srra-20170331.xml | 490467 | 2017-05-09 07:18:54 |
| srra-20170331.xsd | 37501 | 2017-05-09 07:18:54 |
| srra-20170331_cal.xml | 47581 | 2017-05-09 07:18:54 |
| srra-20170331_def.xml | 126052 | 2017-05-09 07:18:54 |
| srra-20170331_lab.xml | 328023 | 2017-05-09 07:18:54 |
| srra-20170331_pre.xml | 225331 | 2017-05-09 07:18:54 |