Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001558370-18-006110-index-headers.html | 2018-08-01 17:09:13 | |
| 0001558370-18-006110-index.html | 2018-08-01 17:09:13 | |
| 0001558370-18-006110.txt | 2018-08-01 17:09:13 | |
 0001558370-18-006110-xbrl.zip | 137808 | 2018-08-01 17:09:13 |
| FilingSummary.xml | 33857 | 2018-08-01 17:09:13 |
| Financial_Report.xlsx | 76092 | 2018-08-01 17:09:13 |
| R1.htm | 22396 | 2018-08-01 17:09:13 |
| R10.htm | 121925 | 2018-08-01 17:09:13 |
| R11.htm | 27623 | 2018-08-01 17:09:13 |
| R12.htm | 141998 | 2018-08-01 17:09:13 |
| R13.htm | 50408 | 2018-08-01 17:09:13 |
| R14.htm | 34214 | 2018-08-01 17:09:13 |
| R15.htm | 139052 | 2018-08-01 17:09:13 |
| R16.htm | 9237 | 2018-08-01 17:09:13 |
| R17.htm | 5582 | 2018-08-01 17:09:13 |
| R18.htm | 39640 | 2018-08-01 17:09:13 |
| R19.htm | 7145 | 2018-08-01 17:09:13 |
| R2.htm | 58571 | 2018-08-01 17:09:13 |
| R20.htm | 173656 | 2018-08-01 17:09:13 |
| R21.htm | 111537 | 2018-08-01 17:09:13 |
| R22.htm | 112361 | 2018-08-01 17:09:13 |
| R23.htm | 26101 | 2018-08-01 17:09:13 |
| R24.htm | 138444 | 2018-08-01 17:09:13 |
| R25.htm | 39803 | 2018-08-01 17:09:13 |
| R26.htm | 28660 | 2018-08-01 17:09:13 |
| R27.htm | 134877 | 2018-08-01 17:09:13 |
| R28.htm | 4232 | 2018-08-01 17:09:13 |
| R29.htm | 15120 | 2018-08-01 17:09:13 |
| R3.htm | 10706 | 2018-08-01 17:09:13 |
| R30.htm | 3999 | 2018-08-01 17:09:13 |
| R31.htm | 15626 | 2018-08-01 17:09:13 |
| R32.htm | 15327 | 2018-08-01 17:09:13 |
| R33.htm | 11512 | 2018-08-01 17:09:13 |
| R34.htm | 7749 | 2018-08-01 17:09:13 |
| R35.htm | 36910 | 2018-08-01 17:09:13 |
| R36.htm | 53244 | 2018-08-01 17:09:13 |
| R37.htm | 20981 | 2018-08-01 17:09:13 |
| R38.htm | 5677 | 2018-08-01 17:09:13 |
| R39.htm | 14902 | 2018-08-01 17:09:13 |
| R4.htm | 48959 | 2018-08-01 17:09:13 |
| R40.htm | 14701 | 2018-08-01 17:09:13 |
| R41.htm | 16310 | 2018-08-01 17:09:13 |
| R42.htm | 12221 | 2018-08-01 17:09:13 |
| R43.htm | 8313 | 2018-08-01 17:09:13 |
| R44.htm | 7541 | 2018-08-01 17:09:13 |
| R45.htm | 13421 | 2018-08-01 17:09:13 |
| R46.htm | 12955 | 2018-08-01 17:09:13 |
| R47.htm | 24086 | 2018-08-01 17:09:13 |
| R48.htm | 23785 | 2018-08-01 17:09:13 |
| R49.htm | 36902 | 2018-08-01 17:09:13 |
| R5.htm | 27839 | 2018-08-01 17:09:13 |
| R50.htm | 14109 | 2018-08-01 17:09:13 |
| R51.htm | 4845 | 2018-08-01 17:09:13 |
| R52.htm | 11422 | 2018-08-01 17:09:13 |
| R53.htm | 42327 | 2018-08-01 17:09:13 |
| R54.htm | 19546 | 2018-08-01 17:09:13 |
| R6.htm | 62555 | 2018-08-01 17:09:13 |
| R7.htm | 6229 | 2018-08-01 17:09:13 |
| R8.htm | 8480 | 2018-08-01 17:09:13 |
| R9.htm | 143792 | 2018-08-01 17:09:13 |
| report.css | 2767 | 2018-08-01 17:09:13 |
| Show.js | 1410 | 2018-08-01 17:09:13 |
| stra-20180630.xml | 1633290 | 2018-08-01 17:09:13 |
| stra-20180630.xsd | 44144 | 2018-08-01 17:09:13 |
| stra-20180630ex311249bae.htm | 19081 | 2018-08-01 17:09:13 |
| stra-20180630ex31264a98c.htm | 19129 | 2018-08-01 17:09:13 |
| stra-20180630ex3216f2d28.htm | 7451 | 2018-08-01 17:09:13 |
| stra-20180630ex322bec5c5.htm | 10089 | 2018-08-01 17:09:13 |
| stra-20180630x10q.htm | 1878966 | 2018-08-01 17:09:13 |
| stra-20180630_cal.xml | 40087 | 2018-08-01 17:09:13 |
| stra-20180630_def.xml | 135600 | 2018-08-01 17:09:13 |
| stra-20180630_lab.xml | 339681 | 2018-08-01 17:09:13 |
| stra-20180630_pre.xml | 290877 | 2018-08-01 17:09:13 |
 stra20180630x10q001.jpg | 37752 | 2018-08-01 17:09:13 |