XML 36 R29.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Goodwill and Related Intangible Assets (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule Of Changes In Carrying Amount Of Goodwill | The changes in the carrying amount of goodwill for the six months ended June 30, 2015 are as follows (in thousands):
| Residential Products |  | Industrial and Infrastructure Products |  | RBI |  | Total
Balance at December 31, 2014 | $ | 181,285 |  |  | $ | 54,759 |  |  | $ | — |  |  | $ | 236,044 |
Acquired goodwill | — |  |  | — |  |  | 56,975 |  |  | 56,975 |
Foreign currency translation | — |  |  | (393 | ) |  | 292 |  |  | (101 | )
Balance at June 30, 2015 | $ | 181,285 |  |  | $ | 54,366 |  |  | $ | 57,267 |  |  | $ | 292,918 |
Schedule Of Acquired Intangible Assets | Acquired intangible assets consist of the following (in thousands):
| June 30, 2015 |  | December 31, 2014 |  |
| Gross Carrying Amount |  | Accumulated Amortization |  | Gross Carrying Amount |  | Accumulated Amortization |  | Estimated Life
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |  |
Trademarks | $ | 55,543 |  |  | $ | — |  |  | $ | 42,720 |  |  | $ | — |  |  | Indefinite
Finite-lived intangible assets: |  |  |  |  |  |  |  |  |
Trademarks | 6,520 |  |  | 2,128 |  |  | 3,886 |  |  | 1,827 |  |  | 2 to 15 Years
Unpatented technology | 28,077 |  |  | 9,676 |  |  | 24,527 |  |  | 8,768 |  |  | 5 to 20 Years
Customer relationships | 85,792 |  |  | 33,156 |  |  | 52,974 |  |  | 31,554 |  |  | 5 to 17 Years
Non-compete agreements | 3,107 |  |  | 1,617 |  |  | 1,807 |  |  | 1,550 |  |  | 4 to 10 Years
Backlog | 6,468 |  |  | 2,199 |  |  | 1,330 |  |  | 1,330 |  |  | 0.5 to 2 Years
| 129,964 |  |  | 48,776 |  |  | 84,524 |  |  | 45,029 |  |  |
Total acquired intangible assets | $ | 185,507 |  |  | $ | 48,776 |  |  | $ | 127,244 |  |  | $ | 45,029 |  |  |
Schedule of Acquired Intangible Asset Amortization Expense | The following table summarizes the acquired intangible asset amortization expense for the three and six months ended June 30 (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Amortization expense | $ | 2,585 |  |  | $ | 1,435 |  |  | $ | 4,011 |  |  | $ | 2,874 |
Schedule Of Amortization Expense | Amortization expense related to acquired intangible assets for the remainder of fiscal 2015 and the next five years thereafter is estimated as follows (in thousands):
2015 | $8,710
2016 | $8,615
2017 | $8,276
2018 | $7,718
2019 | $7,048
2020 | $6,535

X
- Definition Schedule of Acquired Intangible Asset Amortization Expense [Table Text Block] + References No definition available. + Details
Name: | rock_ScheduleofAcquiredIntangibleAssetAmortizationExpenseTableTextBlock
Namespace Prefix: | rock_
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 the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
Name: | us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
Name: | us-gaap_ScheduleOfGoodwillTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
Name: | us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration