Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000803649-19-000033-index-headers.html | 2019-02-14 16:17:54 | |
| 0000803649-19-000033-index.html | 2019-02-14 16:17:54 | |
| 0000803649-19-000033.txt | 2019-02-14 16:17:54 | |
 0000803649-19-000033-xbrl.zip | 357752 | 2019-02-14 16:17:54 |
| eqc-20181231.xml | 2727226 | 2019-02-14 16:17:54 |
| eqc-20181231.xsd | 91700 | 2019-02-14 16:17:54 |
| eqc-20181231_cal.xml | 141163 | 2019-02-14 16:17:54 |
| eqc-20181231_def.xml | 531971 | 2019-02-14 16:17:54 |
| eqc-20181231_lab.xml | 1142678 | 2019-02-14 16:17:54 |
| eqc-20181231_pre.xml | 708268 | 2019-02-14 16:17:54 |
| eqc12311810-k.htm | 2999792 | 2019-02-14 16:17:54 |
| eqc123118exhibit1024.htm | 14899 | 2019-02-14 16:17:54 |
| eqc123118exhibit211.htm | 13058 | 2019-02-14 16:17:54 |
| eqc123118exhibit231.htm | 3438 | 2019-02-14 16:17:54 |
| eqc123118exhibit311.htm | 14980 | 2019-02-14 16:17:54 |
| eqc123118exhibit312.htm | 15812 | 2019-02-14 16:17:54 |
| eqc123118exhibit321.htm | 9998 | 2019-02-14 16:17:54 |
| FilingSummary.xml | 56006 | 2019-02-14 16:17:54 |
| Financial_Report.xlsx | 127048 | 2019-02-14 16:17:54 |
 performancegrapha02.jpg | 44502 | 2019-02-14 16:17:54 |
| R1.htm | 33864 | 2019-02-14 16:17:54 |
| R10.htm | 36895 | 2019-02-14 16:17:54 |
| R11.htm | 206176 | 2019-02-14 16:17:54 |
| R12.htm | 49417 | 2019-02-14 16:17:54 |
| R13.htm | 22087 | 2019-02-14 16:17:54 |
| R14.htm | 45732 | 2019-02-14 16:17:54 |
| R15.htm | 77669 | 2019-02-14 16:17:54 |
| R16.htm | 49998 | 2019-02-14 16:17:54 |
| R17.htm | 24567 | 2019-02-14 16:17:54 |
| R18.htm | 64106 | 2019-02-14 16:17:54 |
| R19.htm | 35170 | 2019-02-14 16:17:54 |
| R2.htm | 85180 | 2019-02-14 16:17:54 |
| R20.htm | 31205 | 2019-02-14 16:17:54 |
| R21.htm | 95468 | 2019-02-14 16:17:54 |
| R22.htm | 6590 | 2019-02-14 16:17:54 |
| R23.htm | 56854 | 2019-02-14 16:17:54 |
| R24.htm | 75133 | 2019-02-14 16:17:54 |
| R25.htm | 5985 | 2019-02-14 16:17:54 |
| R26.htm | 10444 | 2019-02-14 16:17:54 |
| R27.htm | 41565 | 2019-02-14 16:17:54 |
| R28.htm | 6246 | 2019-02-14 16:17:54 |
| R29.htm | 31048 | 2019-02-14 16:17:54 |
| R3.htm | 25289 | 2019-02-14 16:17:54 |
| R30.htm | 151519 | 2019-02-14 16:17:54 |
| R31.htm | 84215 | 2019-02-14 16:17:54 |
| R32.htm | 206562 | 2019-02-14 16:17:54 |
| R33.htm | 53540 | 2019-02-14 16:17:54 |
| R34.htm | 18405 | 2019-02-14 16:17:54 |
| R35.htm | 43772 | 2019-02-14 16:17:54 |
| R36.htm | 67672 | 2019-02-14 16:17:54 |
| R37.htm | 32288 | 2019-02-14 16:17:54 |
| R38.htm | 84176 | 2019-02-14 16:17:54 |
| R39.htm | 65560 | 2019-02-14 16:17:54 |
| R4.htm | 76841 | 2019-02-14 16:17:54 |
| R40.htm | 36008 | 2019-02-14 16:17:54 |
| R41.htm | 26428 | 2019-02-14 16:17:54 |
| R42.htm | 87941 | 2019-02-14 16:17:54 |
| R43.htm | 50221 | 2019-02-14 16:17:54 |
| R44.htm | 75250 | 2019-02-14 16:17:54 |
| R45.htm | 39483 | 2019-02-14 16:17:54 |
| R46.htm | 15495 | 2019-02-14 16:17:54 |
| R47.htm | 26545 | 2019-02-14 16:17:54 |
| R48.htm | 25628 | 2019-02-14 16:17:54 |
| R49.htm | 32806 | 2019-02-14 16:17:54 |
| R5.htm | 4533 | 2019-02-14 16:17:54 |
| R50.htm | 267077 | 2019-02-14 16:17:54 |
| R51.htm | 16106 | 2019-02-14 16:17:54 |
| R52.htm | 23913 | 2019-02-14 16:17:54 |
| R53.htm | 6424 | 2019-02-14 16:17:54 |
| R54.htm | 16772 | 2019-02-14 16:17:54 |
| R55.htm | 23687 | 2019-02-14 16:17:54 |
| R56.htm | 39696 | 2019-02-14 16:17:54 |
| R57.htm | 22466 | 2019-02-14 16:17:54 |
| R58.htm | 30076 | 2019-02-14 16:17:54 |
| R59.htm | 36277 | 2019-02-14 16:17:54 |
| R6.htm | 23324 | 2019-02-14 16:17:54 |
| R60.htm | 129253 | 2019-02-14 16:17:54 |
| R61.htm | 20499 | 2019-02-14 16:17:54 |
| R62.htm | 79873 | 2019-02-14 16:17:54 |
| R63.htm | 11217 | 2019-02-14 16:17:54 |
| R64.htm | 8151 | 2019-02-14 16:17:54 |
| R65.htm | 10390 | 2019-02-14 16:17:54 |
| R66.htm | 20960 | 2019-02-14 16:17:54 |
| R67.htm | 26734 | 2019-02-14 16:17:54 |
| R68.htm | 16242 | 2019-02-14 16:17:54 |
| R69.htm | 10386 | 2019-02-14 16:17:54 |
| R7.htm | 76514 | 2019-02-14 16:17:54 |
| R70.htm | 14377 | 2019-02-14 16:17:54 |
| R71.htm | 4352 | 2019-02-14 16:17:54 |
| R72.htm | 21934 | 2019-02-14 16:17:54 |
| R73.htm | 9133 | 2019-02-14 16:17:54 |
| R74.htm | 13562 | 2019-02-14 16:17:54 |
| R75.htm | 138909 | 2019-02-14 16:17:54 |
| R76.htm | 38725 | 2019-02-14 16:17:54 |
| R77.htm | 23032 | 2019-02-14 16:17:54 |
| R78.htm | 16531 | 2019-02-14 16:17:54 |
| R79.htm | 18458 | 2019-02-14 16:17:54 |
| R8.htm | 106315 | 2019-02-14 16:17:54 |
| R80.htm | 34474 | 2019-02-14 16:17:54 |
| R81.htm | 8393 | 2019-02-14 16:17:54 |
| R82.htm | 71547 | 2019-02-14 16:17:54 |
| R83.htm | 6014 | 2019-02-14 16:17:54 |
| R84.htm | 13520 | 2019-02-14 16:17:54 |
| R85.htm | 24400 | 2019-02-14 16:17:54 |
| R86.htm | 8194 | 2019-02-14 16:17:54 |
| R87.htm | 19272 | 2019-02-14 16:17:54 |
| R88.htm | 7743 | 2019-02-14 16:17:54 |
| R89.htm | 29376 | 2019-02-14 16:17:54 |
| R9.htm | 8125 | 2019-02-14 16:17:54 |
| R90.htm | 10291 | 2019-02-14 16:17:54 |
| R91.htm | 96116 | 2019-02-14 16:17:54 |
| R92.htm | 31961 | 2019-02-14 16:17:54 |
| R93.htm | 11940 | 2019-02-14 16:17:54 |
| report.css | 2768 | 2019-02-14 16:17:54 |
| Show.js | 1086 | 2019-02-14 16:17:54 |