Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000277375-16-000342-index-headers.html | 2016-08-26 12:27:06 | |
| 0000277375-16-000342-index.html | 2016-08-26 12:27:06 | |
| 0000277375-16-000342.txt | 2016-08-26 12:27:06 | |
 0000277375-16-000342-xbrl.zip | 222981 | 2016-08-26 12:27:06 |
| dgas-20160630.xml | 1986685 | 2016-08-26 12:27:06 |
| dgas-20160630.xsd | 45252 | 2016-08-26 12:27:06 |
| dgas-20160630_cal.xml | 53683 | 2016-08-26 12:27:06 |
| dgas-20160630_def.xml | 236164 | 2016-08-26 12:27:06 |
| dgas-20160630_lab.xml | 738357 | 2016-08-26 12:27:06 |
| dgas-20160630_pre.xml | 407854 | 2016-08-26 12:27:06 |
| dgas-2016630x10k.htm | 1868575 | 2016-08-26 12:27:06 |
| dgas-2016630xex311.htm | 13523 | 2016-08-26 12:27:06 |
| dgas-2016630xex312.htm | 13371 | 2016-08-26 12:27:06 |
| dgas-2016630xex321.htm | 7605 | 2016-08-26 12:27:06 |
| dgas-2016630xex322.htm | 7438 | 2016-08-26 12:27:06 |
| dgas-2016630xexhibit21.htm | 2066 | 2016-08-26 12:27:06 |
| dgas-2016630xkexhibit12.htm | 59467 | 2016-08-26 12:27:06 |
| dgas-2016630xkexhibit23.htm | 3557 | 2016-08-26 12:27:06 |
 dgas201563chartx17354a01a03.jpg | 61158 | 2016-08-26 12:27:06 |
| FilingSummary.xml | 30270 | 2016-08-26 12:27:06 |
| Financial_Report.xlsx | 83023 | 2016-08-26 12:27:06 |
| R1.htm | 28503 | 2016-08-26 12:27:06 |
| R10.htm | 20650 | 2016-08-26 12:27:06 |
| R11.htm | 88787 | 2016-08-26 12:27:06 |
| R12.htm | 245503 | 2016-08-26 12:27:06 |
| R13.htm | 6838 | 2016-08-26 12:27:06 |
| R14.htm | 11170 | 2016-08-26 12:27:06 |
| R15.htm | 7115 | 2016-08-26 12:27:06 |
| R16.htm | 15155 | 2016-08-26 12:27:06 |
| R17.htm | 61001 | 2016-08-26 12:27:06 |
| R18.htm | 7522 | 2016-08-26 12:27:06 |
| R19.htm | 8587 | 2016-08-26 12:27:06 |
| R2.htm | 62008 | 2016-08-26 12:27:06 |
| R20.htm | 10687 | 2016-08-26 12:27:06 |
| R21.htm | 123465 | 2016-08-26 12:27:06 |
| R22.htm | 31795 | 2016-08-26 12:27:06 |
| R23.htm | 51054 | 2016-08-26 12:27:06 |
| R24.htm | 6734 | 2016-08-26 12:27:06 |
| R25.htm | 127279 | 2016-08-26 12:27:06 |
| R26.htm | 62410 | 2016-08-26 12:27:06 |
| R27.htm | 32072 | 2016-08-26 12:27:06 |
| R28.htm | 16174 | 2016-08-26 12:27:06 |
| R29.htm | 90107 | 2016-08-26 12:27:06 |
| R3.htm | 94020 | 2016-08-26 12:27:06 |
| R30.htm | 240365 | 2016-08-26 12:27:06 |
| R31.htm | 10630 | 2016-08-26 12:27:06 |
| R32.htm | 59829 | 2016-08-26 12:27:06 |
| R33.htm | 114419 | 2016-08-26 12:27:06 |
| R34.htm | 16305 | 2016-08-26 12:27:06 |
| R35.htm | 49680 | 2016-08-26 12:27:06 |
| R36.htm | 12530 | 2016-08-26 12:27:06 |
| R37.htm | 63388 | 2016-08-26 12:27:06 |
| R38.htm | 23636 | 2016-08-26 12:27:06 |
| R39.htm | 19715 | 2016-08-26 12:27:06 |
| R4.htm | 98001 | 2016-08-26 12:27:06 |
| R40.htm | 91549 | 2016-08-26 12:27:06 |
| R41.htm | 265256 | 2016-08-26 12:27:06 |
| R42.htm | 11072 | 2016-08-26 12:27:06 |
| R43.htm | 11813 | 2016-08-26 12:27:06 |
| R44.htm | 32713 | 2016-08-26 12:27:06 |
| R45.htm | 59863 | 2016-08-26 12:27:06 |
| R46.htm | 4500 | 2016-08-26 12:27:06 |
| R47.htm | 9128 | 2016-08-26 12:27:06 |
| R48.htm | 5668 | 2016-08-26 12:27:06 |
| R49.htm | 113668 | 2016-08-26 12:27:06 |
| R5.htm | 14063 | 2016-08-26 12:27:06 |
| R50.htm | 59888 | 2016-08-26 12:27:06 |
| R51.htm | 17604 | 2016-08-26 12:27:06 |
| R52.htm | 20625 | 2016-08-26 12:27:06 |
| R6.htm | 30883 | 2016-08-26 12:27:06 |
| R7.htm | 16869 | 2016-08-26 12:27:06 |
| R8.htm | 92217 | 2016-08-26 12:27:06 |
| R9.htm | 33777 | 2016-08-26 12:27:06 |
| report.css | 2767 | 2016-08-26 12:27:06 |
| Show.js | 1410 | 2016-08-26 12:27:06 |