Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001104659-14-032420-index-headers.html | 2014-04-30 10:24:51 | |
| 0001104659-14-032420-index.html | 2014-04-30 10:24:51 | |
| 0001104659-14-032420.txt | 2014-04-30 10:24:51 | |
 0001104659-14-032420-xbrl.zip | 804591 | 2014-04-30 10:24:51 |
| a14-9577_110q.htm | 7283946 | 2014-04-30 10:24:51 |
| a14-9577_1ex12.htm | 99558 | 2014-04-30 10:24:51 |
| a14-9577_1ex31d1.htm | 12986 | 2014-04-30 10:24:51 |
| a14-9577_1ex31d2.htm | 12993 | 2014-04-30 10:24:51 |
| a14-9577_1ex32d1.htm | 4030 | 2014-04-30 10:24:51 |
| a14-9577_1ex32d2.htm | 4040 | 2014-04-30 10:24:51 |
| FilingSummary.xml | 38903 | 2014-04-30 10:24:51 |
| Financial_Report.xls | 10918973 | 2014-04-30 10:24:51 |
| Financial_Report.xlsx | 647384 | 2014-04-30 10:24:51 |
 g95771gei001.gif | 2614 | 2014-04-30 10:24:51 |
| pfg-20140331.xml | 12480059 | 2014-04-30 10:24:51 |
| pfg-20140331.xsd | 257831 | 2014-04-30 10:24:51 |
| pfg-20140331_cal.xml | 266137 | 2014-04-30 10:24:51 |
| pfg-20140331_def.xml | 1337698 | 2014-04-30 10:24:51 |
| pfg-20140331_lab.xml | 3815081 | 2014-04-30 10:24:51 |
| pfg-20140331_pre.xml | 1962490 | 2014-04-30 10:24:51 |
| R1.htm | 29292 | 2014-04-30 10:24:51 |
| R10.htm | 178594 | 2014-04-30 10:24:51 |
| R11.htm | 964435 | 2014-04-30 10:24:51 |
| R12.htm | 487168 | 2014-04-30 10:24:51 |
| R13.htm | 9739 | 2014-04-30 10:24:51 |
| R14.htm | 38560 | 2014-04-30 10:24:51 |
| R15.htm | 17059 | 2014-04-30 10:24:51 |
| R16.htm | 274617 | 2014-04-30 10:24:51 |
| R17.htm | 1133429 | 2014-04-30 10:24:51 |
| R18.htm | 147368 | 2014-04-30 10:24:51 |
| R19.htm | 24556 | 2014-04-30 10:24:51 |
| R2.htm | 151576 | 2014-04-30 10:24:51 |
| R20.htm | 42889 | 2014-04-30 10:24:51 |
| R21.htm | 1742982 | 2014-04-30 10:24:51 |
| R22.htm | 8811 | 2014-04-30 10:24:51 |
| R23.htm | 167564 | 2014-04-30 10:24:51 |
| R24.htm | 973845 | 2014-04-30 10:24:51 |
| R25.htm | 468366 | 2014-04-30 10:24:51 |
| R26.htm | 38333 | 2014-04-30 10:24:51 |
| R27.htm | 287912 | 2014-04-30 10:24:51 |
| R28.htm | 1108946 | 2014-04-30 10:24:51 |
| R29.htm | 147133 | 2014-04-30 10:24:51 |
| R3.htm | 64789 | 2014-04-30 10:24:51 |
| R30.htm | 16623 | 2014-04-30 10:24:51 |
| R31.htm | 40961 | 2014-04-30 10:24:51 |
| R32.htm | 1778499 | 2014-04-30 10:24:51 |
| R33.htm | 5509 | 2014-04-30 10:24:51 |
| R34.htm | 59351 | 2014-04-30 10:24:51 |
| R35.htm | 26818 | 2014-04-30 10:24:51 |
| R36.htm | 41582 | 2014-04-30 10:24:51 |
| R37.htm | 51225 | 2014-04-30 10:24:51 |
| R38.htm | 39457 | 2014-04-30 10:24:51 |
| R39.htm | 14964 | 2014-04-30 10:24:51 |
| R4.htm | 79893 | 2014-04-30 10:24:51 |
| R40.htm | 18280 | 2014-04-30 10:24:51 |
| R41.htm | 82166 | 2014-04-30 10:24:51 |
| R42.htm | 25397 | 2014-04-30 10:24:51 |
| R43.htm | 56485 | 2014-04-30 10:24:51 |
| R44.htm | 25066 | 2014-04-30 10:24:51 |
| R45.htm | 40377 | 2014-04-30 10:24:51 |
| R46.htm | 44453 | 2014-04-30 10:24:51 |
| R47.htm | 52123 | 2014-04-30 10:24:51 |
| R48.htm | 18395 | 2014-04-30 10:24:51 |
| R49.htm | 8602 | 2014-04-30 10:24:51 |
| R5.htm | 36445 | 2014-04-30 10:24:51 |
| R50.htm | 18681 | 2014-04-30 10:24:51 |
| R51.htm | 15307 | 2014-04-30 10:24:51 |
| R52.htm | 47512 | 2014-04-30 10:24:51 |
| R53.htm | 24949 | 2014-04-30 10:24:51 |
| R54.htm | 39528 | 2014-04-30 10:24:51 |
| R55.htm | 28913 | 2014-04-30 10:24:51 |
| R56.htm | 21397 | 2014-04-30 10:24:51 |
| R57.htm | 36910 | 2014-04-30 10:24:51 |
| R58.htm | 11781 | 2014-04-30 10:24:51 |
| R59.htm | 5911 | 2014-04-30 10:24:51 |
| R6.htm | 54306 | 2014-04-30 10:24:51 |
| R60.htm | 36462 | 2014-04-30 10:24:51 |
| R61.htm | 13390 | 2014-04-30 10:24:51 |
| R62.htm | 33228 | 2014-04-30 10:24:51 |
| R63.htm | 166532 | 2014-04-30 10:24:51 |
| R64.htm | 48209 | 2014-04-30 10:24:51 |
| R65.htm | 108037 | 2014-04-30 10:24:51 |
| R66.htm | 106716 | 2014-04-30 10:24:51 |
| R67.htm | 19261 | 2014-04-30 10:24:51 |
| R68.htm | 118680 | 2014-04-30 10:24:51 |
| R69.htm | 22091 | 2014-04-30 10:24:51 |
| R7.htm | 8040 | 2014-04-30 10:24:51 |
| R70.htm | 34016 | 2014-04-30 10:24:51 |
| R71.htm | 45508 | 2014-04-30 10:24:51 |
| R72.htm | 11161 | 2014-04-30 10:24:51 |
| R73.htm | 35453 | 2014-04-30 10:24:51 |
| R74.htm | 28051 | 2014-04-30 10:24:51 |
| R75.htm | 35503 | 2014-04-30 10:24:51 |
| R76.htm | 18544 | 2014-04-30 10:24:51 |
| R77.htm | 30520 | 2014-04-30 10:24:51 |
| R78.htm | 24605 | 2014-04-30 10:24:51 |
| R79.htm | 49017 | 2014-04-30 10:24:51 |
| R8.htm | 141833 | 2014-04-30 10:24:51 |
| R80.htm | 208799 | 2014-04-30 10:24:51 |
| R81.htm | 112181 | 2014-04-30 10:24:51 |
| R82.htm | 132418 | 2014-04-30 10:24:51 |
| R83.htm | 199144 | 2014-04-30 10:24:51 |
| R84.htm | 106536 | 2014-04-30 10:24:51 |
| R85.htm | 125088 | 2014-04-30 10:24:51 |
| R9.htm | 14007 | 2014-04-30 10:24:51 |
| report.css | 2740 | 2014-04-30 10:24:51 |
| Show.js | 1410 | 2014-04-30 10:24:51 |