XML 50 R33.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Note 9 - Employee Retirement Plans (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2023
Notes Tables |
Schedule of Allocation of Plan Assets [Table Text Block] |
|  | Actual as of |  |  | Actual as of |
|  | December 31, 2023 |  |  | December 31, 2022 |
U.S. Pension plan: |  |  |  |  |  |  |  |
Cash |  |  | 3 | % |  |  | 3 | %
Debt securities |  |  | 33 | % |  |  | 28 | %
Equity securities |  |  | 64 | % |  |  | 69 | %
Total |  |  | 100 | % |  |  | 100 | %
Schedule Of Fair Value Plan Assets Measured On Recurring Basis [Table Text Block] |
|  |  |  |  |  | Quoted prices in |  |  | Significant |  |  | Significant |  |  |  |  |
|  |  |  |  |  | active |  |  | observable |  |  | unobservable |  |  | Measured at |
(In Thousands) |  |  |  |  | markets |  |  | inputs |  |  | inputs |  |  | Net Asset |
|  | Fair Value |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |  |  | Value |
Pension plan measured at fair value: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity securities |  | $ | 19,773 |  |  | $ | 14,212 |  |  | $ | 57 |  |  | $ | 5,504 |  |  | $ | — |
Debt securities |  |  | 10,058 |  |  |  | 296 |  |  |  | 9,762 |  |  |  | — |  |  |  | — |
Cash and cash equivalents |  |  | 1,012 |  |  |  | — |  |  |  | 1,012 |  |  |  | — |  |  |  | — |
Total fair value of plan assets |  | $ | 30,843 |  |  | $ | 14,508 |  |  | $ | 10,831 |  |  | $ | 5,504 |  |  | $ | — |
|  |  |  |  |  | Quoted prices in |  |  | Significant |  |  | Significant |  |  |  |  |
|  |  |  |  |  | active |  |  | observable |  |  | unobservable |  |  | Measured at |
(In Thousands) |  |  |  |  | markets |  |  | inputs |  |  | inputs |  |  | Net Asset |
|  | Fair Value |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |  |  | Value |
Pension plan measured at fair value: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity securities, primarily exchange traded funds |  | $ | 31,196 |  |  | $ | 26,847 |  |  | $ | 1,147 |  |  | $ | 3,202 |  |  | $ | — |
Debt securities |  |  | 12,928 |  |  |  | 3,434 |  |  |  | 9,494 |  |  |  | — |  |  |  | — |
Cash and cash equivalents |  |  | 1,254 |  |  |  | — |  |  |  | 1,254 |  |  |  | — |  |  |  | — |
Total fair value of plan assets |  | $ | 45,378 |  |  | $ | 30,281 |  |  | $ | 11,895 |  |  | $ | 3,202 |  |  | $ | — |
Schedule of Net Funded Status [Table Text Block] |
(In Thousands) |  | Year Ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Change in benefit obligation: |  |  |  |  |  |  |  |  |  |  |  |
Benefit obligation at beginning of the period |  | $ | 64,273 |  |  | $ | 84,308 |  |  | $ | 88,960 |
Interest cost |  |  | 2,873 |  |  |  | 2,313 |  |  |  | 2,168 |
Benefits paid |  |  | (5,104 | ) |  |  | (5,667 | ) |  |  | (5,693 | )
Actuarial (gain) loss (A) |  |  | 1,916 |  |  |  | (16,681 | ) |  |  | (1,127 | )
Settlement |  |  | (13,861 | ) |  |  | — |  |  |  | — |
Benefit obligation at end of the period |  | $ | 50,097 |  |  | $ | 64,273 |  |  | $ | 84,308 |
Change in plan assets: |  |  |  |  |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of the period |  | $ | 45,378 |  |  | $ | 56,779 |  |  | $ | 56,495 |
Actual return |  |  | 2,827 |  |  |  | (7,337 | ) |  |  | 4,374 |
Employer contributions |  |  | 1,603 |  |  |  | 1,603 |  |  |  | 1,603 |
Benefits paid |  |  | (5,104 | ) |  |  | (5,667 | ) |  |  | (5,693 | )
Settlement |  |  | (13,861 | ) |  |  | — |  |  |  | — |
Fair value of plan assets at end of the period |  |  | 30,843 |  |  |  | 45,378 |  |  |  | 56,779 |
Unfunded status at end of the period |  | $ | (19,254 | ) |  | $ | (18,895 | ) |  | $ | (27,529 | )
Net amount recognized in the balance sheet consists of: |  |  |  |  |  |  |  |  |  |  |  |
Current liabilities |  | $ | (1,572 | ) |  | $ | (1,575 | ) |  | $ | (1,578 | )
Noncurrent liabilities |  |  | (17,682 | ) |  |  | (17,320 | ) |  |  | (25,951 | )
Net amount recognized |  | $ | (19,254 | ) |  | $ | (18,895 | ) |  | $ | (27,529 | )
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block] |
(In Thousands) |  | December 31, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Projected and accumulated benefit obligation |  | $ | 50,097 |  |  | $ | 64,273 |
Fair value of plan assets |  |  | 30,843 |  |  |  | 45,378 |
Schedule of Net Benefit Costs [Table Text Block] |
(In Thousands) |  | Year Ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Interest cost |  | $ | 2,873 |  |  | $ | 2,313 |  |  | $ | 2,168 |
Expected return on plan assets |  |  | (2,111 | ) |  |  | (3,006 | ) |  |  | (2,174 | )
Amortization of net actuarial losses |  |  | (146 | ) |  |  | 63 |  |  |  | 145 |
Settlement/curtailment loss |  |  | (2,177 | ) |  |  | — |  |  |  | — |
Net periodic pension cost |  | $ | (1,561 | ) |  | $ | (630 | ) |  | $ | 139 |
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] |
|  | Pension Benefits |
(In Thousands) |  | Year Ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Total net (gain) loss recognized in other comprehensive (income) loss |  | $ | 3,522 |  |  | $ | (6,404 | ) |  | $ | (3,472 | )
Defined Benefit Plan, Assumptions [Table Text Block] |
|  | Pension Benefits |
|  | 2023 |  |  | 2022 |
Discount rate |  |  | 5.5 | % |  |  | 2.9 | %
Expected long-term rate of return on assets |  |  | 6.4 | % |  |  | 5.5 | %
Schedule of Expected Benefit Payments [Table Text Block] |
|  | Pension |
Year ending December 31, (In Thousands) |  | Benefits |
2024 |  | $ | 4,710 |
2025 |  |  | 4,648 |
2026 |  |  | 4,567 |
2027 |  |  | 4,466 |
2028 |  |  | 4,360 |
2029 – 2033 |  |  | 19,834 |
Total 10-year estimated future benefit payments |  | $ | 42,585 |

X
- Definition Tabular disclosure of the pension plan measured at fair value of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. + References No definition available. + Details
Name: | tdw_ScheduleOfFairValuePlanAssetsMeasuredOnRecurringBasisTableTextBlock
Namespace Prefix: | tdw_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of benefit obligation and plan assets of defined benefit plan with accumulated benefit obligation in excess of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-3 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-3 + Details
Name: | us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (d)(5) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the net gain (loss) and net prior service cost or credit recognized in other comprehensive income (loss) for the period for pension plans and/or other employee benefit plans, and reclassification adjustments of other comprehensive income (loss) for the period, as those amounts, including amortization of the net transition asset or obligation, are recognized as components of net periodic benefit cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assumption used to determine benefit obligation and net periodic benefit cost of defined benefit plan. Includes, but is not limited to, discount rate, rate of compensation increase, expected long-term rate of return on plan assets and interest crediting rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_ScheduleOfAssumptionsUsedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (f) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (h) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_ScheduleOfNetBenefitCostsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of net funded status of pension plans and/or other employee benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_ScheduleOfNetFundedStatusTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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