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| 0001564590-18-026372-index.html | 2018-11-02 08:01:15 | |
| 0001564590-18-026372.txt | 2018-11-02 08:01:15 | |
| extr-8k_20180930.htm | 29015 | 2018-11-02 08:01:15 |
| extr-ex991_6.htm | 772939 | 2018-11-02 08:01:15 |
| extr-ex992_37.htm | 14009 | 2018-11-02 08:01:15 |
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