XML 57 R46.htm IDEA: XBRL DOCUMENT
v3.22.1

Shipyard Transaction and Discontinued Operations - Summary of Operating Results Constituting Loss Form Discontinued Operations (Parenthetical) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |
Other (income) expense, net | $ 647 | $ (600)
Shipyard Transaction |  |
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |
Estimated loss related to impairment of long lived assets and transaction costs | 22,800 | 1,600
Additional loss related to additional transaction and other costs | 2,600 |
Other (income) expense, net | 600 | (500)
Towing Salvage and Rescue Ship |  |
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |
Change in estimated margins | 8,400 | $ (8,300)
Approved change order from increased contract price | 9,200 |
Increased craft labor costs | $ 800 |

X
- Definition Additional loss related to additional transaction and other costs. + References No definition available. + Details
Name: | gifi_AdditionalLossRelatedToAdditionalTransactionAndOtherCosts
Namespace Prefix: | gifi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Contract with customer asset cumulative catch-up adjustment to revenue approved change order. + References No definition available. + Details
Name: | gifi_ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueApprovedChangeOrder
Namespace Prefix: | gifi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Contract with customer, asset, cumulative catch-up adjustment to revenue, change in estimated margins. + References No definition available. + Details
Name: | gifi_ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueChangeInEstimatedMargins
Namespace Prefix: | gifi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Contract with customer asset cumulative catch-up adjustment to revenue increased craft labor costs. + References No definition available. + Details
Name: | gifi_ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueIncreasedCraftLaborCosts
Namespace Prefix: | gifi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Disposal group including discontinued operation other income (expense). + References No definition available. + Details
Name: | gifi_DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpense
Namespace Prefix: | gifi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2611-110228 + Details
Name: | us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_TransactionTypeAxis=gifi_ShipyardTransactionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=gifi_TowingSalvageAndRescueShipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |