Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000105770-19-000020-index-headers.html | 2019-05-08 16:55:06 | |
| 0000105770-19-000020-index.html | 2019-05-08 16:55:06 | |
| 0000105770-19-000020.txt | 2019-05-08 16:55:06 | |
 0000105770-19-000020-xbrl.zip | 203420 | 2019-05-08 16:55:06 |
| ex1022019psuawardagreement.htm | 51294 | 2019-05-08 16:55:06 |
| ex1032019stockoptionawarda.htm | 53903 | 2019-05-08 16:55:06 |
| ex311q12019.htm | 11163 | 2019-05-08 16:55:06 |
| ex312q12019.htm | 11201 | 2019-05-08 16:55:06 |
| ex321q12019.htm | 4758 | 2019-05-08 16:55:06 |
| ex322q12019.htm | 4932 | 2019-05-08 16:55:06 |
| FilingSummary.xml | 40126 | 2019-05-08 16:55:06 |
| Financial_Report.xlsx | 78973 | 2019-05-08 16:55:06 |
 psuaward1.jpg | 3016 | 2019-05-08 16:55:06 |
 psuaward3.gif | 47533 | 2019-05-08 16:55:06 |
 pswaward2.gif | 47533 | 2019-05-08 16:55:06 |
| R1.htm | 25433 | 2019-05-08 16:55:06 |
| R10.htm | 48745 | 2019-05-08 16:55:06 |
| R11.htm | 16775 | 2019-05-08 16:55:06 |
| R12.htm | 13830 | 2019-05-08 16:55:06 |
| R13.htm | 40155 | 2019-05-08 16:55:06 |
| R14.htm | 8856 | 2019-05-08 16:55:06 |
| R15.htm | 32190 | 2019-05-08 16:55:06 |
| R16.htm | 65265 | 2019-05-08 16:55:06 |
| R17.htm | 94662 | 2019-05-08 16:55:06 |
| R18.htm | 72826 | 2019-05-08 16:55:06 |
| R19.htm | 119083 | 2019-05-08 16:55:06 |
| R2.htm | 55254 | 2019-05-08 16:55:06 |
| R20.htm | 12034 | 2019-05-08 16:55:06 |
| R21.htm | 67131 | 2019-05-08 16:55:06 |
| R22.htm | 51033 | 2019-05-08 16:55:06 |
| R23.htm | 7201 | 2019-05-08 16:55:06 |
| R24.htm | 6407 | 2019-05-08 16:55:06 |
| R25.htm | 33922 | 2019-05-08 16:55:06 |
| R26.htm | 5076 | 2019-05-08 16:55:06 |
| R27.htm | 17232 | 2019-05-08 16:55:06 |
| R28.htm | 43556 | 2019-05-08 16:55:06 |
| R29.htm | 14173 | 2019-05-08 16:55:06 |
| R3.htm | 21764 | 2019-05-08 16:55:06 |
| R30.htm | 14569 | 2019-05-08 16:55:06 |
| R31.htm | 36701 | 2019-05-08 16:55:06 |
| R32.htm | 24390 | 2019-05-08 16:55:06 |
| R33.htm | 58992 | 2019-05-08 16:55:06 |
| R34.htm | 87761 | 2019-05-08 16:55:06 |
| R35.htm | 74045 | 2019-05-08 16:55:06 |
| R36.htm | 118784 | 2019-05-08 16:55:06 |
| R37.htm | 66824 | 2019-05-08 16:55:06 |
| R38.htm | 45771 | 2019-05-08 16:55:06 |
| R39.htm | 30399 | 2019-05-08 16:55:06 |
| R4.htm | 10203 | 2019-05-08 16:55:06 |
| R40.htm | 32123 | 2019-05-08 16:55:06 |
| R41.htm | 23677 | 2019-05-08 16:55:06 |
| R42.htm | 4821 | 2019-05-08 16:55:06 |
| R43.htm | 4480 | 2019-05-08 16:55:06 |
| R44.htm | 25803 | 2019-05-08 16:55:06 |
| R45.htm | 12059 | 2019-05-08 16:55:06 |
| R46.htm | 9571 | 2019-05-08 16:55:06 |
| R47.htm | 11173 | 2019-05-08 16:55:06 |
| R48.htm | 7154 | 2019-05-08 16:55:06 |
| R49.htm | 7057 | 2019-05-08 16:55:06 |
| R5.htm | 97101 | 2019-05-08 16:55:06 |
| R50.htm | 37382 | 2019-05-08 16:55:06 |
| R51.htm | 17648 | 2019-05-08 16:55:06 |
| R52.htm | 30169 | 2019-05-08 16:55:06 |
| R53.htm | 49343 | 2019-05-08 16:55:06 |
| R54.htm | 62152 | 2019-05-08 16:55:06 |
| R55.htm | 25532 | 2019-05-08 16:55:06 |
| R56.htm | 28633 | 2019-05-08 16:55:06 |
| R57.htm | 10068 | 2019-05-08 16:55:06 |
| R58.htm | 6681 | 2019-05-08 16:55:06 |
| R59.htm | 28737 | 2019-05-08 16:55:06 |
| R6.htm | 19348 | 2019-05-08 16:55:06 |
| R60.htm | 41045 | 2019-05-08 16:55:06 |
| R61.htm | 4374 | 2019-05-08 16:55:06 |
| R62.htm | 47336 | 2019-05-08 16:55:06 |
| R63.htm | 35968 | 2019-05-08 16:55:06 |
| R64.htm | 33383 | 2019-05-08 16:55:06 |
| R65.htm | 21159 | 2019-05-08 16:55:06 |
| R66.htm | 6664 | 2019-05-08 16:55:06 |
| R67.htm | 51191 | 2019-05-08 16:55:06 |
| R68.htm | 9936 | 2019-05-08 16:55:06 |
| R69.htm | 11298 | 2019-05-08 16:55:06 |
| R7.htm | 60558 | 2019-05-08 16:55:06 |
| R70.htm | 32735 | 2019-05-08 16:55:06 |
| R8.htm | 7445 | 2019-05-08 16:55:06 |
| R9.htm | 13148 | 2019-05-08 16:55:06 |
| report.css | 2767 | 2019-05-08 16:55:06 |
| Show.js | 1085 | 2019-05-08 16:55:06 |
 stockoptionaward1.jpg | 3016 | 2019-05-08 16:55:06 |
 stockoptionaward2.gif | 47533 | 2019-05-08 16:55:06 |
 stockoptionaward3.gif | 47533 | 2019-05-08 16:55:06 |
| wst-20190331.xml | 1680309 | 2019-05-08 16:55:06 |
| wst-20190331.xsd | 46833 | 2019-05-08 16:55:06 |
| wst-20190331_cal.xml | 88922 | 2019-05-08 16:55:06 |
| wst-20190331_def.xml | 239790 | 2019-05-08 16:55:06 |
| wst-20190331_lab.xml | 705432 | 2019-05-08 16:55:06 |
| wst-20190331_pre.xml | 411212 | 2019-05-08 16:55:06 |
| wst10q33119.htm | 1055467 | 2019-05-08 16:55:06 |