Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000928953-21-000018-index-headers.html | 2021-05-14 16:16:29 | |
| 0000928953-21-000018-index.html | 2021-05-14 16:16:29 | |
| 0000928953-21-000018.txt | 2021-05-14 16:16:29 | |
 0000928953-21-000018-xbrl.zip | 181343 | 2021-05-14 16:16:29 |
| exhibit3112021-03psr.htm | 10420 | 2021-05-14 16:16:29 |
| exhibit3122021-03psr.htm | 9987 | 2021-05-14 16:16:29 |
| exhibit3212021-03psr.htm | 8524 | 2021-05-14 16:16:29 |
| FilingSummary.xml | 28697 | 2021-05-14 16:16:29 |
| Financial_Report.xlsx | 66973 | 2021-05-14 16:16:29 |
| MetaLinks.json | 451379 | 2021-05-14 16:16:29 |
| R1.htm | 48871 | 2021-05-14 16:16:29 |
| R10.htm | 13677 | 2021-05-14 16:16:29 |
| R11.htm | 33462 | 2021-05-14 16:16:29 |
| R12.htm | 5176 | 2021-05-14 16:16:29 |
| R13.htm | 18736 | 2021-05-14 16:16:29 |
| R14.htm | 18814 | 2021-05-14 16:16:29 |
| R15.htm | 25516 | 2021-05-14 16:16:29 |
| R16.htm | 28877 | 2021-05-14 16:16:29 |
| R17.htm | 17586 | 2021-05-14 16:16:29 |
| R18.htm | 4993 | 2021-05-14 16:16:29 |
| R19.htm | 56293 | 2021-05-14 16:16:29 |
| R2.htm | 104771 | 2021-05-14 16:16:29 |
| R20.htm | 11715 | 2021-05-14 16:16:29 |
| R21.htm | 18907 | 2021-05-14 16:16:29 |
| R22.htm | 14288 | 2021-05-14 16:16:29 |
| R23.htm | 32013 | 2021-05-14 16:16:29 |
| R24.htm | 18263 | 2021-05-14 16:16:29 |
| R25.htm | 22783 | 2021-05-14 16:16:29 |
| R26.htm | 22082 | 2021-05-14 16:16:29 |
| R27.htm | 10557 | 2021-05-14 16:16:29 |
| R28.htm | 31315 | 2021-05-14 16:16:29 |
| R29.htm | 10512 | 2021-05-14 16:16:29 |
| R3.htm | 27436 | 2021-05-14 16:16:29 |
| R30.htm | 16109 | 2021-05-14 16:16:29 |
| R31.htm | 13625 | 2021-05-14 16:16:29 |
| R32.htm | 8267 | 2021-05-14 16:16:29 |
| R33.htm | 15697 | 2021-05-14 16:16:29 |
| R34.htm | 26111 | 2021-05-14 16:16:29 |
| R35.htm | 57259 | 2021-05-14 16:16:29 |
| R36.htm | 5420 | 2021-05-14 16:16:29 |
| R37.htm | 19080 | 2021-05-14 16:16:29 |
| R38.htm | 8860 | 2021-05-14 16:16:29 |
| R39.htm | 13860 | 2021-05-14 16:16:29 |
| R4.htm | 90671 | 2021-05-14 16:16:29 |
| R40.htm | 15914 | 2021-05-14 16:16:29 |
| R41.htm | 5519 | 2021-05-14 16:16:29 |
| R42.htm | 30494 | 2021-05-14 16:16:29 |
| R43.htm | 22003 | 2021-05-14 16:16:29 |
| R44.htm | 17338 | 2021-05-14 16:16:29 |
| R45.htm | 15855 | 2021-05-14 16:16:29 |
| R46.htm | 26297 | 2021-05-14 16:16:29 |
| R47.htm | 11496 | 2021-05-14 16:16:29 |
| R5.htm | 27724 | 2021-05-14 16:16:29 |
| R6.htm | 68544 | 2021-05-14 16:16:29 |
| R7.htm | 28028 | 2021-05-14 16:16:29 |
| R8.htm | 11623 | 2021-05-14 16:16:29 |
| R9.htm | 36365 | 2021-05-14 16:16:29 |
| report.css | 2767 | 2021-05-14 16:16:29 |
| Show.js | 1085 | 2021-05-14 16:16:29 |
| wsr-20210331.htm | 878087 | 2021-05-14 16:16:29 |
| wsr-20210331.xsd | 36644 | 2021-05-14 16:16:29 |
| wsr-20210331_cal.xml | 67916 | 2021-05-14 16:16:29 |
| wsr-20210331_def.xml | 175996 | 2021-05-14 16:16:29 |
| wsr-20210331_htm.xml | 659535 | 2021-05-14 16:16:29 |
| wsr-20210331_lab.xml | 415837 | 2021-05-14 16:16:29 |
| wsr-20210331_pre.xml | 286340 | 2021-05-14 16:16:29 |