XML 39 R13.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Gain on Dispositions of Plant, Equipment and Timberlands | 12 Months Ended
--- | ---
Dec. 31, 2017
Property Plant And Equipment [Abstract] |
Gain on Dispositions of Plant, Equipment and Timberlands |
4. | GAIN ON DISPOSITIONS OF PLANT, EQUIPMENT AND TIMBERLANDS
During 2017, 2016 and 2015, we completed the following sales of assets:
Dollars in thousands |  | Acres |  |  | Proceeds |  |  | Gain (loss) |  |
2017 |  |  |  |  |  |  |  |  |  |  |  |  |
Timberlands |  |  | 332 |  |  | $ | 209 |  |  | $ | 188 |  |
Other |  | n/a |  |  |  | 19 |  |  |  | (214 | ) |
Total |  |  |  |  |  | $ | 228 |  |  | $ | (26 | ) |
2016 |  |  |  |  |  |  |  |  |  |  |  |  |
Timberlands |  |  | — |  |  | $ | - |  |  | $ | - |  |
Other |  | n/a |  |  |  | 70 |  |  |  | (216 | ) |
Total |  |  |  |  |  | $ | 70 |  |  | $ | (216 | ) |
2015 |  |  |  |  |  |  |  |  |  |  |  |  |
Timberlands |  |  | 15,628 |  |  | $ | 23,917 |  |  | $ | 20,867 |  |
Other |  | n/a |  |  | 542 |  |  | 246 |  |
Total |  |  |  |  |  | $ | 24,459 |  |  | $ | 21,113 |  |

X
- Definition The entire disclosure of the sale of timberlands and other assets. This may include, but not limited to acres sold, net proceeds and gains or losses. + References No definition available. + Details
Name: | glt_GainOnDispositionsOfPlantEquipmentAndTimberlandsTextBlock
Namespace Prefix: | glt_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration