Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-17-003329-index-headers.html | 2017-03-03 16:20:30 | |
| 0001564590-17-003329-index.html | 2017-03-03 16:20:30 | |
| 0001564590-17-003329.txt | 2017-03-03 16:20:30 | |
 0001564590-17-003329-xbrl.zip | 213385 | 2017-03-03 16:20:30 |
| FilingSummary.xml | 42239 | 2017-03-03 16:20:30 |
| Financial_Report.xlsx | 96901 | 2017-03-03 16:20:30 |
 g2017030320480472122403.jpg | 17803 | 2017-03-03 16:20:30 |
| pi-10k_20161231.htm | 4974537 | 2017-03-03 16:20:30 |
| pi-20161231.xml | 3022029 | 2017-03-03 16:20:30 |
| pi-20161231.xsd | 63334 | 2017-03-03 16:20:30 |
| pi-20161231_cal.xml | 81583 | 2017-03-03 16:20:30 |
| pi-20161231_def.xml | 267161 | 2017-03-03 16:20:30 |
| pi-20161231_lab.xml | 587486 | 2017-03-03 16:20:30 |
| pi-20161231_pre.xml | 461637 | 2017-03-03 16:20:30 |
| pi-ex231_1087.htm | 1710 | 2017-03-03 16:20:30 |
| pi-ex311_12.htm | 14150 | 2017-03-03 16:20:30 |
| pi-ex312_11.htm | 14013 | 2017-03-03 16:20:30 |
| pi-ex321_9.htm | 8186 | 2017-03-03 16:20:30 |
| pi-ex322_10.htm | 8185 | 2017-03-03 16:20:30 |
| R1.htm | 29943 | 2017-03-03 16:20:30 |
| R10.htm | 400637 | 2017-03-03 16:20:30 |
| R11.htm | 118730 | 2017-03-03 16:20:30 |
| R12.htm | 51189 | 2017-03-03 16:20:30 |
| R13.htm | 234093 | 2017-03-03 16:20:30 |
| R14.htm | 22477 | 2017-03-03 16:20:30 |
| R15.htm | 49797 | 2017-03-03 16:20:30 |
| R16.htm | 173060 | 2017-03-03 16:20:30 |
| R17.htm | 54523 | 2017-03-03 16:20:30 |
| R18.htm | 40118 | 2017-03-03 16:20:30 |
| R19.htm | 6163 | 2017-03-03 16:20:30 |
| R2.htm | 100455 | 2017-03-03 16:20:30 |
| R20.htm | 459122 | 2017-03-03 16:20:30 |
| R21.htm | 356392 | 2017-03-03 16:20:30 |
| R22.htm | 114340 | 2017-03-03 16:20:30 |
| R23.htm | 49626 | 2017-03-03 16:20:30 |
| R24.htm | 233603 | 2017-03-03 16:20:30 |
| R25.htm | 15685 | 2017-03-03 16:20:30 |
| R26.htm | 42863 | 2017-03-03 16:20:30 |
| R27.htm | 169939 | 2017-03-03 16:20:30 |
| R28.htm | 49310 | 2017-03-03 16:20:30 |
| R29.htm | 35089 | 2017-03-03 16:20:30 |
| R3.htm | 37715 | 2017-03-03 16:20:30 |
| R30.htm | 79172 | 2017-03-03 16:20:30 |
| R31.htm | 27743 | 2017-03-03 16:20:30 |
| R32.htm | 33708 | 2017-03-03 16:20:30 |
| R33.htm | 16968 | 2017-03-03 16:20:30 |
| R34.htm | 12149 | 2017-03-03 16:20:30 |
| R35.htm | 20170 | 2017-03-03 16:20:30 |
| R36.htm | 17853 | 2017-03-03 16:20:30 |
| R37.htm | 23139 | 2017-03-03 16:20:30 |
| R38.htm | 24296 | 2017-03-03 16:20:30 |
| R39.htm | 9086 | 2017-03-03 16:20:30 |
| R4.htm | 56136 | 2017-03-03 16:20:30 |
| R40.htm | 14923 | 2017-03-03 16:20:30 |
| R41.htm | 31943 | 2017-03-03 16:20:30 |
| R42.htm | 7097 | 2017-03-03 16:20:30 |
| R43.htm | 36026 | 2017-03-03 16:20:30 |
| R44.htm | 23365 | 2017-03-03 16:20:30 |
| R45.htm | 26696 | 2017-03-03 16:20:30 |
| R46.htm | 45726 | 2017-03-03 16:20:30 |
| R47.htm | 8512 | 2017-03-03 16:20:30 |
| R48.htm | 9914 | 2017-03-03 16:20:30 |
| R49.htm | 69436 | 2017-03-03 16:20:30 |
| R5.htm | 15397 | 2017-03-03 16:20:30 |
| R50.htm | 17138 | 2017-03-03 16:20:30 |
| R51.htm | 14960 | 2017-03-03 16:20:30 |
| R52.htm | 36924 | 2017-03-03 16:20:30 |
| R53.htm | 22658 | 2017-03-03 16:20:30 |
| R54.htm | 53303 | 2017-03-03 16:20:30 |
| R55.htm | 14358 | 2017-03-03 16:20:30 |
| R56.htm | 34935 | 2017-03-03 16:20:30 |
| R57.htm | 30426 | 2017-03-03 16:20:30 |
| R58.htm | 17324 | 2017-03-03 16:20:30 |
| R59.htm | 37548 | 2017-03-03 16:20:30 |
| R6.htm | 24761 | 2017-03-03 16:20:30 |
| R60.htm | 39881 | 2017-03-03 16:20:30 |
| R61.htm | 11281 | 2017-03-03 16:20:30 |
| R62.htm | 11231 | 2017-03-03 16:20:30 |
| R7.htm | 62041 | 2017-03-03 16:20:30 |
| R8.htm | 99206 | 2017-03-03 16:20:30 |
| R9.htm | 7159 | 2017-03-03 16:20:30 |
| report.css | 2767 | 2017-03-03 16:20:30 |
| Show.js | 1410 | 2017-03-03 16:20:30 |