XML 30 R19.htm IDEA: XBRL DOCUMENT
v3.23.1

Revenue, Contract Assets and Liabilities and Other Contract Matters - Summary of Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Disaggregation of Revenue [Line Items] |  |
Revenue | $ 62,168 | $ 28,686
Long-Term Contract with Customer |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 40,219 | 9,149
Short-Term Contract with Customer |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 21,949 | 19,537
Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | (428) | (92)
Eliminations | Long-Term Contract with Customer |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | (8) | (1)
Eliminations | Short-Term Contract with Customer |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | (420) | (91)
Services | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 21,587 | 20,664
Services | Operating Segments | Long-Term Contract with Customer |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 172 | 1,609
Services | Operating Segments | Short-Term Contract with Customer |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 21,415 | 19,055
Fabrication | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 39,662 | 5,617
Fabrication | Operating Segments | Long-Term Contract with Customer |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 38,708 | 5,044
Fabrication | Operating Segments | Short-Term Contract with Customer |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 954 | 573
Shipyard | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 1,347 | 2,497
Shipyard | Operating Segments | Long-Term Contract with Customer |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 1,347 | 2,497
Fixed-price and unit-rate |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 13,700 | 9,149
Fixed-price and unit-rate | Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | (8) | (1)
Fixed-price and unit-rate | Services | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 172 | 1,609
Fixed-price and unit-rate | Fabrication | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 12,189 | 5,044
Fixed-price and unit-rate | Shipyard | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 1,347 | 2,497
Time And Materials And Cost Reimbursable |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 48,015 | 19,036
Time And Materials And Cost Reimbursable | Services | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 20,542 | 18,463
Time And Materials And Cost Reimbursable | Fabrication | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 27,473 | 573
Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 453 | 501
Other | Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | (420) | (91)
Other | Services | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | $ 873 | $ 592

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI https://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_ContractWithCustomerDurationAxis=us-gaap_LongTermContractWithCustomerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerDurationAxis=us-gaap_ShortTermContractWithCustomerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_IntersegmentEliminationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=gifi_ServicesSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=gifi_FabricationSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=gifi_ShipyardSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerBasisOfPricingAxis=us-gaap_FixedPriceContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerBasisOfPricingAxis=gifi_TimeAndMaterialsAndCostReimbursableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerBasisOfPricingAxis=gifi_OtherBasisOfPricingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |