XML 58 R47.htm IDEA: XBRL DOCUMENT
v3.21.2

Long-Term Debt - Credit Agreement (Details) $ in Thousands |  | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Sep. 30, 2021 USD ($) | Dec. 31, 2020 USD ($)
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 313,850 | $ 404,732
ABL Facility Maturing September 2026 |  |  |
Debt Instrument [Line Items] |  |  |
Borrowing capacity |  | $ 80,000 |
Maturity date |  | Sep. 30, 2026 |
Springing maturity period |  | 91 days |
Outstanding principal amount with a springing maturity |  | $ 50,000 |
Additional commitments (up to) |  | 70,000 |
Sub-limit for the issuance of letters of credit |  | 10,000 |
Borrowings under ABL Facility |  | 0 |
Available borrowing capacity |  | 69,600 |
Letters of credit issued |  | 2,200 |
ABL Facility Maturing September 2026 | Pro Forma |  |  |
Debt Instrument [Line Items] |  |  |
Available borrowing capacity |  | $ 16,000 |
Available borrowing capacity (as a percent) |  | 10.00% |
Availability of the borrowing base to satisfy and maintain fixed charge ratio |  | $ 8,000 |
Period prior to maturity to maintain a pro forma minimum excess availability |  | 91 days |
ABL Facility Maturing September 2026 | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Commitment fee percentage |  | 0.375% |
Fixed charge coverage ratio |  | 1.0 |
ABL Facility Maturing September 2026 | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Commitment fee percentage |  | 0.50% |
ABL Facility Maturing September 2026 | SOFR | Minimum | Subsequent Event |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate (as a percent) | 0.114% |  |
ABL Facility Maturing September 2026 | SOFR | Maximum | Subsequent Event |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate (as a percent) | 0.428% |  |
ABL Facility Maturing September 2026 | United States |  |  |
Debt Instrument [Line Items] |  |  |
Borrowing capacity |  | $ 45,000 |
ABL Facility Maturing September 2026 | United States | LIBOR | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate (as a percent) |  | 1.50% |
ABL Facility Maturing September 2026 | United States | LIBOR | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate (as a percent) |  | 2.00% |
ABL Facility Maturing September 2026 | United States | Base Rate | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate (as a percent) |  | 0.50% |
ABL Facility Maturing September 2026 | United States | Base Rate | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate (as a percent) |  | 1.00% |
ABL Facility Maturing September 2026 | United Kingdom |  |  |
Debt Instrument [Line Items] |  |  |
Borrowing capacity |  | $ 35,000 |
ABL Facility Maturing September 2026 | United Kingdom | LIBOR | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate (as a percent) |  | 1.50% |
ABL Facility Maturing September 2026 | United Kingdom | LIBOR | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate (as a percent) |  | 2.00% |
ABL Facility Maturing September 2026 | United Kingdom | SONIA | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate (as a percent) |  | 1.50% |
ABL Facility Maturing September 2026 | United Kingdom | SONIA | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate (as a percent) |  | 2.00% |

X
- Definition Represents the fixed charge coverage ratio. + References No definition available. + Details
Name: | hlx_FixedChargeCoverageRatio
Namespace Prefix: | hlx_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the sub-limit of for the issuance of letters of credit under the line of credit facility. + References No definition available. + Details
Name: | hlx_LineOfCreditFacilityLettersOfCreditSublimit
Namespace Prefix: | hlx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the period prior to the maturity of outstanding debt to maintain a pro forma minimum excess availability. + References No definition available. + Details
Name: | hlx_LineOfCreditFacilityPeriodPriorToMaturityToMaintainExcessAvailability
Namespace Prefix: | hlx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of borrowing capacity currently available under the credit facility (current borrowing capacity divided by the amount of borrowing base). + References No definition available. + Details
Name: | hlx_LineOfCreditFacilityRemainingBorrowingCapacityPercentage
Namespace Prefix: | hlx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the springing maturity period prior to the maturity of outstanding debt with outstanding borrowings of $50 million. + References No definition available. + Details
Name: | hlx_LineOfCreditFacilitySpringingMaturityPeriod
Namespace Prefix: | hlx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the threshold amount for outstanding principal with springing maturity. + References No definition available. + Details
Name: | hlx_LineOfCreditFacilitySpringingMaturityPrincipalAmountThreshold
Namespace Prefix: | hlx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount recognized for uncertainty in income taxes classified as current. + References No definition available. + Details
Name: | hlx_LineOfCreditFacilityThresholdForBorrowingBaseFixedCoverageRatio
Namespace Prefix: | hlx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum commitment increase permitted by ABL Facility. + References No definition available. + Details
Name: | hlx_MaximumCommitmentIncrease
Namespace Prefix: | hlx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 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(22)) -URI http://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 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
Name: | us-gaap_DebtInstrumentMaturityDate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + 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(22)) -URI http://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 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
Name: | us-gaap_LineOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=hlx_AssetBasedCreditAgreementMaturingSeptember2026Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ProFormaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_GB
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=hlx_SterlingOvernightInterbankAverageRateSoniaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |