XML 47 R33.htm IDEA: XBRL DOCUMENT
v3.10.0.1

GOODWILL AND OTHER INTANGIBLES (Tables) | 12 Months Ended
--- | ---
Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | The following table provides changes in carrying value of goodwill by segment through the year ended September 30, 2018:
| At September 30, 2016 |  | Goodwill from acquisitions |  | Foreign currency translation adjustments |  | September 30, 2017 |  | Goodwill from acquisitions |  | Foreign currency translation adjustments |  | September 30, 2018
Home & Building Products | $ | 287,618 |  |  | $ | 12,417 |  |  | $ | 559 |  |  | $ | 300,594 |  |  | $ | 119,907 |  |  | $ | 349 |  |  | $ | 420,850 |
Defense Electronics | 18,545 |  |  | — |  |  | — |  |  | 18,545 |  |  | — |  |  | — |  |  | 18,545 |
Total | $ | 306,163 |  |  | $ | 12,417 |  |  | $ | 559 |  |  | $ | 319,139 |  |  | $ | 119,907 |  |  | $ | 349 |  |  | $ | 439,395 |
Schedule Of Identifiable Intangible Assets | The following table provides the gross carrying value and accumulated amortization for each major class of intangible asset:
| At September 30, 2018 |  |  |  | At September 30, 2017
| Gross Carrying Amount |  | Accumulated Amortization |  | Average Life (Years) |  | Gross Carrying Amount |  | Accumulated Amortization
Customer relationships & other | $ | 186,031 |  |  | $ | 49,822 |  |  | 23 |  | $ | 152,025 |  |  | $ | 43,421 |
Unpatented technology | 19,004 |  |  | 6,238 |  |  | 13 |  | 6,193 |  |  | 4,719 |
Total amortizable intangible assets | 205,035 |  |  | 56,060 |  |  |  |  | 158,218 |  |  | 48,140 |
Trademarks | 221,883 |  |  | — |  |  |  |  | 95,049 |  |  | — |
Total intangible assets | $ | 426,918 |  |  | $ | 56,060 |  |  |  |  | $ | 253,267 |  |  | $ | 48,140 |

X
- Definition Tabular disclosure of the carrying value of intangible assets both subject to and not subject to amortization, excluding goodwill, in total and by major class. + References No definition available. + Details
Name: | gff_ScheduleOfIdentifiableIntangibleAssetsTableTextBlock
Namespace Prefix: | gff_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267 + Details
Name: | us-gaap_ScheduleOfGoodwillTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration