Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001140361-20-011091-index-headers.html | 2020-05-08 15:28:21 | |
| 0001140361-20-011091-index.html | 2020-05-08 15:28:21 | |
| 0001140361-20-011091.txt | 2020-05-08 15:28:21 | |
 0001140361-20-011091-xbrl.zip | 322850 | 2020-05-08 15:28:21 |
| ex31_1.htm | 9125 | 2020-05-08 15:28:21 |
| ex31_2.htm | 9178 | 2020-05-08 15:28:21 |
| ex32_1.htm | 5144 | 2020-05-08 15:28:21 |
| ex32_2.htm | 5630 | 2020-05-08 15:28:21 |
| FilingSummary.xml | 39857 | 2020-05-08 15:28:21 |
| Financial_Report.xlsx | 110810 | 2020-05-08 15:28:21 |
| form10q.htm | 2976614 | 2020-05-08 15:28:21 |
| gcbc-20200331.xml | 4028106 | 2020-05-08 15:28:21 |
| gcbc-20200331.xsd | 57568 | 2020-05-08 15:28:21 |
| gcbc-20200331_cal.xml | 132064 | 2020-05-08 15:28:21 |
| gcbc-20200331_def.xml | 334106 | 2020-05-08 15:28:21 |
| gcbc-20200331_lab.xml | 925273 | 2020-05-08 15:28:21 |
| gcbc-20200331_pre.xml | 543609 | 2020-05-08 15:28:21 |
 image0.jpg | 105353 | 2020-05-08 15:28:21 |
| R1.htm | 30880 | 2020-05-08 15:28:21 |
| R10.htm | 6760 | 2020-05-08 15:28:21 |
| R11.htm | 6881 | 2020-05-08 15:28:21 |
| R12.htm | 265257 | 2020-05-08 15:28:21 |
| R13.htm | 652860 | 2020-05-08 15:28:21 |
| R14.htm | 207602 | 2020-05-08 15:28:21 |
| R15.htm | 25389 | 2020-05-08 15:28:21 |
| R16.htm | 5541 | 2020-05-08 15:28:21 |
| R17.htm | 27116 | 2020-05-08 15:28:21 |
| R18.htm | 21565 | 2020-05-08 15:28:21 |
| R19.htm | 30750 | 2020-05-08 15:28:21 |
| R2.htm | 78097 | 2020-05-08 15:28:21 |
| R20.htm | 52145 | 2020-05-08 15:28:21 |
| R21.htm | 42839 | 2020-05-08 15:28:21 |
| R22.htm | 27197 | 2020-05-08 15:28:21 |
| R23.htm | 5539 | 2020-05-08 15:28:21 |
| R24.htm | 10153 | 2020-05-08 15:28:21 |
| R25.htm | 8254 | 2020-05-08 15:28:21 |
| R26.htm | 6202 | 2020-05-08 15:28:21 |
| R27.htm | 26352 | 2020-05-08 15:28:21 |
| R28.htm | 259256 | 2020-05-08 15:28:21 |
| R29.htm | 644230 | 2020-05-08 15:28:21 |
| R3.htm | 20590 | 2020-05-08 15:28:21 |
| R30.htm | 204167 | 2020-05-08 15:28:21 |
| R31.htm | 24717 | 2020-05-08 15:28:21 |
| R32.htm | 19480 | 2020-05-08 15:28:21 |
| R33.htm | 29134 | 2020-05-08 15:28:21 |
| R34.htm | 51551 | 2020-05-08 15:28:21 |
| R35.htm | 38378 | 2020-05-08 15:28:21 |
| R36.htm | 28192 | 2020-05-08 15:28:21 |
| R37.htm | 5347 | 2020-05-08 15:28:21 |
| R38.htm | 59334 | 2020-05-08 15:28:21 |
| R39.htm | 122220 | 2020-05-08 15:28:21 |
| R4.htm | 82762 | 2020-05-08 15:28:21 |
| R40.htm | 86174 | 2020-05-08 15:28:21 |
| R41.htm | 6487 | 2020-05-08 15:28:21 |
| R42.htm | 42188 | 2020-05-08 15:28:21 |
| R43.htm | 82370 | 2020-05-08 15:28:21 |
| R44.htm | 84268 | 2020-05-08 15:28:21 |
| R45.htm | 7053 | 2020-05-08 15:28:21 |
| R46.htm | 97122 | 2020-05-08 15:28:21 |
| R47.htm | 28189 | 2020-05-08 15:28:21 |
| R48.htm | 105884 | 2020-05-08 15:28:21 |
| R49.htm | 6693 | 2020-05-08 15:28:21 |
| R5.htm | 16839 | 2020-05-08 15:28:21 |
| R50.htm | 46923 | 2020-05-08 15:28:21 |
| R51.htm | 28343 | 2020-05-08 15:28:21 |
| R52.htm | 40683 | 2020-05-08 15:28:21 |
| R53.htm | 49505 | 2020-05-08 15:28:21 |
| R54.htm | 24852 | 2020-05-08 15:28:21 |
| R55.htm | 15605 | 2020-05-08 15:28:21 |
| R56.htm | 8904 | 2020-05-08 15:28:21 |
| R57.htm | 20904 | 2020-05-08 15:28:21 |
| R58.htm | 21731 | 2020-05-08 15:28:21 |
| R59.htm | 35595 | 2020-05-08 15:28:21 |
| R6.htm | 5379 | 2020-05-08 15:28:21 |
| R60.htm | 24175 | 2020-05-08 15:28:21 |
| R61.htm | 22979 | 2020-05-08 15:28:21 |
| R62.htm | 19730 | 2020-05-08 15:28:21 |
| R63.htm | 18659 | 2020-05-08 15:28:21 |
| R7.htm | 36223 | 2020-05-08 15:28:21 |
| R8.htm | 97975 | 2020-05-08 15:28:21 |
| R9.htm | 10967 | 2020-05-08 15:28:21 |
| report.css | 2767 | 2020-05-08 15:28:21 |
| Show.js | 1085 | 2020-05-08 15:28:21 |