Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-13-189819-index-headers.html | 2013-05-01 08:01:17 | |
| 0001193125-13-189819-index.html | 2013-05-01 08:01:17 | |
| 0001193125-13-189819.txt | 2013-05-01 08:01:17 | |
 0001193125-13-189819-xbrl.zip | 126464 | 2013-05-01 08:01:17 |
| d503564d10q.htm | 530603 | 2013-05-01 08:01:17 |
| d503564dex311.htm | 6524 | 2013-05-01 08:01:17 |
| d503564dex312.htm | 7095 | 2013-05-01 08:01:17 |
| d503564dex321.htm | 5925 | 2013-05-01 08:01:17 |
| FilingSummary.xml | 31718 | 2013-05-01 08:01:17 |
| Financial_Report.xls | 609508 | 2013-05-01 08:01:17 |
| pten-20130331.xml | 687230 | 2013-05-01 08:01:17 |
| pten-20130331.xsd | 56547 | 2013-05-01 08:01:17 |
| pten-20130331_cal.xml | 73658 | 2013-05-01 08:01:17 |
| pten-20130331_def.xml | 339546 | 2013-05-01 08:01:17 |
| pten-20130331_lab.xml | 442332 | 2013-05-01 08:01:17 |
| pten-20130331_pre.xml | 407134 | 2013-05-01 08:01:17 |
| R1.htm | 28819 | 2013-05-01 08:01:17 |
| R10.htm | 33502 | 2013-05-01 08:01:17 |
| R11.htm | 53119 | 2013-05-01 08:01:17 |
| R12.htm | 14991 | 2013-05-01 08:01:17 |
| R13.htm | 39894 | 2013-05-01 08:01:17 |
| R14.htm | 32519 | 2013-05-01 08:01:17 |
| R15.htm | 14666 | 2013-05-01 08:01:17 |
| R16.htm | 13339 | 2013-05-01 08:01:17 |
| R17.htm | 21415 | 2013-05-01 08:01:17 |
| R18.htm | 9201 | 2013-05-01 08:01:17 |
| R19.htm | 20542 | 2013-05-01 08:01:17 |
| R2.htm | 118836 | 2013-05-01 08:01:17 |
| R20.htm | 8169 | 2013-05-01 08:01:17 |
| R21.htm | 24405 | 2013-05-01 08:01:17 |
| R22.htm | 9043 | 2013-05-01 08:01:17 |
| R23.htm | 22974 | 2013-05-01 08:01:17 |
| R24.htm | 58589 | 2013-05-01 08:01:17 |
| R25.htm | 13852 | 2013-05-01 08:01:17 |
| R26.htm | 35732 | 2013-05-01 08:01:17 |
| R27.htm | 29902 | 2013-05-01 08:01:17 |
| R28.htm | 12699 | 2013-05-01 08:01:17 |
| R29.htm | 11830 | 2013-05-01 08:01:17 |
| R3.htm | 30874 | 2013-05-01 08:01:17 |
| R30.htm | 8732 | 2013-05-01 08:01:17 |
| R31.htm | 8128 | 2013-05-01 08:01:17 |
| R32.htm | 20785 | 2013-05-01 08:01:17 |
| R33.htm | 53494 | 2013-05-01 08:01:17 |
| R34.htm | 16902 | 2013-05-01 08:01:17 |
| R35.htm | 43361 | 2013-05-01 08:01:17 |
| R36.htm | 34960 | 2013-05-01 08:01:17 |
| R37.htm | 35002 | 2013-05-01 08:01:17 |
| R38.htm | 14681 | 2013-05-01 08:01:17 |
| R39.htm | 7368 | 2013-05-01 08:01:17 |
| R4.htm | 114962 | 2013-05-01 08:01:17 |
| R40.htm | 7734 | 2013-05-01 08:01:17 |
| R41.htm | 10283 | 2013-05-01 08:01:17 |
| R42.htm | 27654 | 2013-05-01 08:01:17 |
| R43.htm | 5074 | 2013-05-01 08:01:17 |
| R44.htm | 18173 | 2013-05-01 08:01:17 |
| R45.htm | 31778 | 2013-05-01 08:01:17 |
| R46.htm | 12946 | 2013-05-01 08:01:17 |
| R47.htm | 15765 | 2013-05-01 08:01:17 |
| R48.htm | 15958 | 2013-05-01 08:01:17 |
| R49.htm | 15971 | 2013-05-01 08:01:17 |
| R5.htm | 17953 | 2013-05-01 08:01:17 |
| R50.htm | 32277 | 2013-05-01 08:01:17 |
| R51.htm | 5997 | 2013-05-01 08:01:17 |
| R52.htm | 18903 | 2013-05-01 08:01:17 |
| R53.htm | 148721 | 2013-05-01 08:01:17 |
| R54.htm | 26332 | 2013-05-01 08:01:17 |
| R55.htm | 31518 | 2013-05-01 08:01:17 |
| R56.htm | 11021 | 2013-05-01 08:01:17 |
| R57.htm | 26047 | 2013-05-01 08:01:17 |
| R58.htm | 12987 | 2013-05-01 08:01:17 |
| R59.htm | 14491 | 2013-05-01 08:01:17 |
| R6.htm | 6462 | 2013-05-01 08:01:17 |
| R60.htm | 7047 | 2013-05-01 08:01:17 |
| R7.htm | 62655 | 2013-05-01 08:01:17 |
| R8.htm | 140360 | 2013-05-01 08:01:17 |
| R9.htm | 4396 | 2013-05-01 08:01:17 |
| report.css | 2721 | 2013-05-01 08:01:17 |
| Show.js | 6423 | 2013-05-01 08:01:17 |