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| 0001193125-19-221197-index.html | 2019-08-14 16:10:49 | |
| 0001193125-19-221197.txt | 2019-08-14 16:10:49 | |
 0001193125-19-221197-xbrl.zip | 66291 | 2019-08-14 16:10:49 |
| chng-20190630.xml | 605539 | 2019-08-14 16:10:49 |
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| chng-20190630_cal.xml | 25539 | 2019-08-14 16:10:49 |
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| d767647dex991.htm | 384189 | 2019-08-14 16:10:49 |
| FilingSummary.xml | 20956 | 2019-08-14 16:10:49 |
| Financial_Report.xlsx | 37754 | 2019-08-14 16:10:49 |
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| R9.htm | 11625 | 2019-08-14 16:10:49 |
| report.css | 2767 | 2019-08-14 16:10:49 |
| Show.js | 1085 | 2019-08-14 16:10:49 |