XML 49 R34.htm IDEA: XBRL DOCUMENT
v3.22.4

Inventories (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Inventory Disclosure [Abstract] |
Schedule of Inventories | Inventories at December 31 consisted of the following (in thousands):
| 2022 |  | 2021
Raw material | $ | 111,187 |  |  | $ | 135,558 |
Work-in-process | 17,944 |  |  | 5,858 |
Finished goods | 47,523 |  |  | 39,256 |
Gross inventory | 176,654 |  |  | 180,672 |
Less reserves | (6,294) |  |  | (4,465) |
Total inventories | $ | 170,360 |  |  | $ | 176,207 |
Summary of Activity within the Reserve for Excess, Obsolete, and Slow Moving Inventory | The following table summarizes activity recorded within the reserve for excess, obsolete and slow moving inventory for the years ended December 31 (in thousands):
| 2022 |  | 2021 |  | 2020
Beginning balance | $ | 4,400 |  |  | $ | 4,161 |  |  | $ | 3,463 |
Excess, obsolete and slow moving inventory expense | 1,582 |  |  | 215 |  |  | 355 |
Scrapped inventory and other adjustments | 197 |  |  | 24 |  |  | 343 |
Ending balance | $ | 6,179 |  |  | $ | 4,400 |  |  | $ | 4,161 |

X
- Definition Rollforward of excess, obsolete, and slow-moving inventory reserve. + References No definition available. + Details
Name: | rock_SummaryOfSlowMovingInventoryActivityTableTextBlock
Namespace Prefix: | rock_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(c)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 + Details
Name: | us-gaap_ScheduleOfInventoryCurrentTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration