Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000826675-18-000005-index-headers.html | 2018-03-05 16:49:45 | |
| 0000826675-18-000005-index.html | 2018-03-05 16:49:45 | |
| 0000826675-18-000005.txt | 2018-03-05 16:49:45 | |
 0000826675-18-000005-xbrl.zip | 237131 | 2018-03-05 16:49:45 |
| a2017form10-k.htm | 3224054 | 2018-03-05 16:49:45 |
| a2017form10-kexhibit1018no.htm | 7488 | 2018-03-05 16:49:45 |
| a2017form10-kexx1028execut.htm | 67514 | 2018-03-05 16:49:45 |
| a2017form10-kexx121ratioof.htm | 57209 | 2018-03-05 16:49:45 |
| a2017form10-kexx211consoli.htm | 5396 | 2018-03-05 16:49:45 |
| a2017form10-kexx311ceocert.htm | 13815 | 2018-03-05 16:49:45 |
| a2017form10-kexx312cfocert.htm | 13830 | 2018-03-05 16:49:45 |
| a2017form10-kexx321soxcert.htm | 10825 | 2018-03-05 16:49:45 |
| a2916form10-kexx231bdocons.htm | 3433 | 2018-03-05 16:49:45 |
 chart-08d3723fd18c57568a4a04.jpg | 86415 | 2018-03-05 16:49:45 |
 chart-10aa52600f445520809a04.jpg | 38841 | 2018-03-05 16:49:45 |
 chart-1171d6c138985e729fba04.jpg | 34506 | 2018-03-05 16:49:45 |
 chart-474ed65b797e5e3581ca04.jpg | 72677 | 2018-03-05 16:49:45 |
 chart-9e5256b607e15f96978a04.jpg | 74049 | 2018-03-05 16:49:45 |
 chart-d80651bb941f5551ba9a04.jpg | 87830 | 2018-03-05 16:49:45 |
 chart-e82d207c46deb1d5f9aa04.jpg | 76919 | 2018-03-05 16:49:45 |
| dx-20171231.xml | 2546460 | 2018-03-05 16:49:45 |
| dx-20171231.xsd | 32181 | 2018-03-05 16:49:45 |
| dx-20171231_cal.xml | 68067 | 2018-03-05 16:49:45 |
| dx-20171231_def.xml | 285831 | 2018-03-05 16:49:45 |
| dx-20171231_lab.xml | 589871 | 2018-03-05 16:49:45 |
| dx-20171231_pre.xml | 365471 | 2018-03-05 16:49:45 |
| FilingSummary.xml | 26510 | 2018-03-05 16:49:45 |
| Financial_Report.xlsx | 80929 | 2018-03-05 16:49:45 |
| R1.htm | 28384 | 2018-03-05 16:49:45 |
| R10.htm | 262651 | 2018-03-05 16:49:45 |
| R11.htm | 137567 | 2018-03-05 16:49:45 |
| R12.htm | 10974 | 2018-03-05 16:49:45 |
| R13.htm | 48875 | 2018-03-05 16:49:45 |
| R14.htm | 7935 | 2018-03-05 16:49:45 |
| R15.htm | 7849 | 2018-03-05 16:49:45 |
| R16.htm | 105030 | 2018-03-05 16:49:45 |
| R17.htm | 5290 | 2018-03-05 16:49:45 |
| R18.htm | 84634 | 2018-03-05 16:49:45 |
| R19.htm | 284531 | 2018-03-05 16:49:45 |
| R2.htm | 68751 | 2018-03-05 16:49:45 |
| R20.htm | 89884 | 2018-03-05 16:49:45 |
| R21.htm | 267901 | 2018-03-05 16:49:45 |
| R22.htm | 134605 | 2018-03-05 16:49:45 |
| R23.htm | 32049 | 2018-03-05 16:49:45 |
| R24.htm | 12467 | 2018-03-05 16:49:45 |
| R25.htm | 144944 | 2018-03-05 16:49:45 |
| R26.htm | 39258 | 2018-03-05 16:49:45 |
| R27.htm | 14508 | 2018-03-05 16:49:45 |
| R28.htm | 21431 | 2018-03-05 16:49:45 |
| R29.htm | 19841 | 2018-03-05 16:49:45 |
| R3.htm | 27100 | 2018-03-05 16:49:45 |
| R30.htm | 122648 | 2018-03-05 16:49:45 |
| R31.htm | 19256 | 2018-03-05 16:49:45 |
| R32.htm | 10082 | 2018-03-05 16:49:45 |
| R33.htm | 31258 | 2018-03-05 16:49:45 |
| R34.htm | 26002 | 2018-03-05 16:49:45 |
| R35.htm | 61157 | 2018-03-05 16:49:45 |
| R36.htm | 13856 | 2018-03-05 16:49:45 |
| R37.htm | 29548 | 2018-03-05 16:49:45 |
| R38.htm | 22915 | 2018-03-05 16:49:45 |
| R39.htm | 39422 | 2018-03-05 16:49:45 |
| R4.htm | 47462 | 2018-03-05 16:49:45 |
| R40.htm | 34824 | 2018-03-05 16:49:45 |
| R41.htm | 8569 | 2018-03-05 16:49:45 |
| R42.htm | 11961 | 2018-03-05 16:49:45 |
| R43.htm | 36323 | 2018-03-05 16:49:45 |
| R5.htm | 77829 | 2018-03-05 16:49:45 |
| R6.htm | 82545 | 2018-03-05 16:49:45 |
| R7.htm | 48366 | 2018-03-05 16:49:45 |
| R8.htm | 281290 | 2018-03-05 16:49:45 |
| R9.htm | 118047 | 2018-03-05 16:49:45 |
| report.css | 2767 | 2018-03-05 16:49:45 |
| Show.js | 1410 | 2018-03-05 16:49:45 |