Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-18-010036-index-headers.html | 2018-05-01 16:39:16 | |
| 0001564590-18-010036-index.html | 2018-05-01 16:39:16 | |
| 0001564590-18-010036.txt | 2018-05-01 16:39:16 | |
 0001564590-18-010036-xbrl.zip | 236973 | 2018-05-01 16:39:16 |
| FilingSummary.xml | 51017 | 2018-05-01 16:39:16 |
| Financial_Report.xlsx | 97885 | 2018-05-01 16:39:16 |
 g2018050119311818824167.jpg | 4311 | 2018-05-01 16:39:16 |
 g2018050119311896024168.jpg | 9888 | 2018-05-01 16:39:16 |
 g2018050119322725026141.jpg | 2229 | 2018-05-01 16:39:16 |
 g2018050119323259726142.jpg | 8403 | 2018-05-01 16:39:16 |
 g2018050119323260126143.jpg | 8509 | 2018-05-01 16:39:16 |
 g2018050119323260726144.jpg | 6685 | 2018-05-01 16:39:16 |
| glt-10q_20180331.htm | 3843502 | 2018-05-01 16:39:16 |
| glt-20180331.xml | 5640874 | 2018-05-01 16:39:16 |
| glt-20180331.xsd | 72258 | 2018-05-01 16:39:16 |
| glt-20180331_cal.xml | 64007 | 2018-05-01 16:39:16 |
| glt-20180331_def.xml | 269896 | 2018-05-01 16:39:16 |
| glt-20180331_lab.xml | 458096 | 2018-05-01 16:39:16 |
| glt-20180331_pre.xml | 428232 | 2018-05-01 16:39:16 |
| glt-ex101_353.htm | 88414 | 2018-05-01 16:39:16 |
| glt-ex311_8.htm | 17023 | 2018-05-01 16:39:16 |
| glt-ex312_10.htm | 18514 | 2018-05-01 16:39:16 |
| glt-ex321_6.htm | 7195 | 2018-05-01 16:39:16 |
| glt-ex322_9.htm | 8586 | 2018-05-01 16:39:16 |
| R1.htm | 21932 | 2018-05-01 16:39:16 |
| R10.htm | 48826 | 2018-05-01 16:39:16 |
| R11.htm | 60685 | 2018-05-01 16:39:16 |
| R12.htm | 209695 | 2018-05-01 16:39:16 |
| R13.htm | 57261 | 2018-05-01 16:39:16 |
| R14.htm | 96620 | 2018-05-01 16:39:16 |
| R15.htm | 68743 | 2018-05-01 16:39:16 |
| R16.htm | 25709 | 2018-05-01 16:39:16 |
| R17.htm | 21534 | 2018-05-01 16:39:16 |
| R18.htm | 89496 | 2018-05-01 16:39:16 |
| R19.htm | 64338 | 2018-05-01 16:39:16 |
| R2.htm | 52317 | 2018-05-01 16:39:16 |
| R20.htm | 198563 | 2018-05-01 16:39:16 |
| R21.htm | 47138 | 2018-05-01 16:39:16 |
| R22.htm | 273705 | 2018-05-01 16:39:16 |
| R23.htm | 1063678 | 2018-05-01 16:39:16 |
| R24.htm | 24527 | 2018-05-01 16:39:16 |
| R25.htm | 184105 | 2018-05-01 16:39:16 |
| R26.htm | 51727 | 2018-05-01 16:39:16 |
| R27.htm | 62796 | 2018-05-01 16:39:16 |
| R28.htm | 210709 | 2018-05-01 16:39:16 |
| R29.htm | 53001 | 2018-05-01 16:39:16 |
| R3.htm | 20791 | 2018-05-01 16:39:16 |
| R30.htm | 98059 | 2018-05-01 16:39:16 |
| R31.htm | 68847 | 2018-05-01 16:39:16 |
| R32.htm | 26036 | 2018-05-01 16:39:16 |
| R33.htm | 20508 | 2018-05-01 16:39:16 |
| R34.htm | 85967 | 2018-05-01 16:39:16 |
| R35.htm | 62413 | 2018-05-01 16:39:16 |
| R36.htm | 199107 | 2018-05-01 16:39:16 |
| R37.htm | 28826 | 2018-05-01 16:39:16 |
| R38.htm | 270902 | 2018-05-01 16:39:16 |
| R39.htm | 1062135 | 2018-05-01 16:39:16 |
| R4.htm | 8212 | 2018-05-01 16:39:16 |
| R40.htm | 20005 | 2018-05-01 16:39:16 |
| R41.htm | 54093 | 2018-05-01 16:39:16 |
| R42.htm | 13208 | 2018-05-01 16:39:16 |
| R43.htm | 20397 | 2018-05-01 16:39:16 |
| R44.htm | 4910 | 2018-05-01 16:39:16 |
| R45.htm | 35174 | 2018-05-01 16:39:16 |
| R46.htm | 32477 | 2018-05-01 16:39:16 |
| R47.htm | 22010 | 2018-05-01 16:39:16 |
| R48.htm | 33048 | 2018-05-01 16:39:16 |
| R49.htm | 6660 | 2018-05-01 16:39:16 |
| R5.htm | 76809 | 2018-05-01 16:39:16 |
| R50.htm | 23063 | 2018-05-01 16:39:16 |
| R51.htm | 14214 | 2018-05-01 16:39:16 |
| R52.htm | 9236 | 2018-05-01 16:39:16 |
| R53.htm | 18971 | 2018-05-01 16:39:16 |
| R54.htm | 20199 | 2018-05-01 16:39:16 |
| R55.htm | 12023 | 2018-05-01 16:39:16 |
| R56.htm | 8442 | 2018-05-01 16:39:16 |
| R57.htm | 25498 | 2018-05-01 16:39:16 |
| R58.htm | 20049 | 2018-05-01 16:39:16 |
| R59.htm | 41296 | 2018-05-01 16:39:16 |
| R6.htm | 72083 | 2018-05-01 16:39:16 |
| R60.htm | 12484 | 2018-05-01 16:39:16 |
| R61.htm | 22448 | 2018-05-01 16:39:16 |
| R62.htm | 13076 | 2018-05-01 16:39:16 |
| R63.htm | 9233 | 2018-05-01 16:39:16 |
| R64.htm | 15710 | 2018-05-01 16:39:16 |
| R65.htm | 54220 | 2018-05-01 16:39:16 |
| R66.htm | 17741 | 2018-05-01 16:39:16 |
| R67.htm | 17213 | 2018-05-01 16:39:16 |
| R68.htm | 12451 | 2018-05-01 16:39:16 |
| R69.htm | 54036 | 2018-05-01 16:39:16 |
| R7.htm | 6340 | 2018-05-01 16:39:16 |
| R70.htm | 7324 | 2018-05-01 16:39:16 |
| R71.htm | 52141 | 2018-05-01 16:39:16 |
| R72.htm | 17581 | 2018-05-01 16:39:16 |
| R73.htm | 71452 | 2018-05-01 16:39:16 |
| R74.htm | 62684 | 2018-05-01 16:39:16 |
| R75.htm | 70812 | 2018-05-01 16:39:16 |
| R8.htm | 15845 | 2018-05-01 16:39:16 |
| R9.htm | 185191 | 2018-05-01 16:39:16 |
| report.css | 2767 | 2018-05-01 16:39:16 |
| Show.js | 1410 | 2018-05-01 16:39:16 |