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| 0001558370-17-008679-index.html | 2017-11-09 15:27:14 | |
| 0001558370-17-008679.txt | 2017-11-09 15:27:14 | |
 0001558370-17-008679-xbrl.zip | 151447 | 2017-11-09 15:27:14 |
| FilingSummary.xml | 22922 | 2017-11-09 15:27:14 |
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| imgn-20170930xex32.htm | 10316 | 2017-11-09 15:27:14 |
| imgn-20170930_cal.xml | 41916 | 2017-11-09 15:27:14 |
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| report.css | 2767 | 2017-11-09 15:27:14 |
| Show.js | 1410 | 2017-11-09 15:27:14 |