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| 0001483798-19-000050-index.html | 2019-05-01 11:06:59 | |
| 0001483798-19-000050.txt | 2019-05-01 11:06:59 | |
 0001483798-19-000050-xbrl.zip | 36865 | 2019-05-01 11:06:59 |
| FilingSummary.xml | 13464 | 2019-05-01 11:06:59 |
| Financial_Report.xlsx | 24860 | 2019-05-01 11:06:59 |
 image2.jpg | 36627 | 2019-05-01 11:06:59 |
| pbec-20151231.xml | 178120 | 2019-05-01 11:06:59 |
| pbec-20151231.xsd | 13315 | 2019-05-01 11:06:59 |
| pbec-20151231_cal.xml | 39513 | 2019-05-01 11:06:59 |
| pbec-20151231_def.xml | 27434 | 2019-05-01 11:06:59 |
| pbec-20151231_lab.xml | 119373 | 2019-05-01 11:06:59 |
| pbec-20151231_pre.xml | 91832 | 2019-05-01 11:06:59 |
| pbec10k-20151231.htm | 548878 | 2019-05-01 11:06:59 |
| pbec10k-20151231_311.htm | 14666 | 2019-05-01 11:06:59 |
| pbec10k-20151231_312.htm | 13892 | 2019-05-01 11:06:59 |
| pbec10k-20151231_321.htm | 5964 | 2019-05-01 11:06:59 |
| pbec10k-20151231_322.htm | 5919 | 2019-05-01 11:06:59 |
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| R9.htm | 17393 | 2019-05-01 11:06:59 |
| report.css | 2767 | 2019-05-01 11:06:59 |
| Show.js | 1085 | 2019-05-01 11:06:59 |