Granted (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Document Type
Document Type
Other
Other Nonoperating Income (Expense)
Common Stock
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Settlements
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements
COMMITMENTS AND CONTINGENCIES
Commitments and Contingencies Disclosure [Text Block]
Percent of outstanding capital stock transferred to the purchaser
Disposal Group, Not Discontinued Operation, Subsidiary Or Equity Method Investee, Ownership Interest Sold
Disposal Group, Not Discontinued Operation, Subsidiary Or Equity Method Investee, Ownership Interest Sold
Segments [Axis]
Segments [Axis]
EMPLOYEE BENEFIT PLANS
Retirement Benefits [Text Block]
Vested (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Schedule of the Changes in Accumulated Other Comprehensive Loss, Net of Tax, by Component
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Schedule of Restructuring and Related Costs [Table]
Schedule of Restructuring and Related Costs [Table]
Level 3
Fair Value, Inputs, Level 3 [Member]
Self-Insurance
Self Insurance Reserve [Policy Text Block]
Provision for obsolete inventory
Inventory Write-down
Colombia
COLOMBIA
Leases
Lessee, Leases [Policy Text Block]
Share repurchases (in shares)
Stock Repurchased During Period, Shares
Statistical Measurement [Domain]
Statistical Measurement [Domain]
Liabilities and Shareholders’ Equity
Liabilities and Equity [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restructuring Cost and Reserve [Line Items]
Restructuring Cost and Reserve [Line Items]
Other noncurrent liabilities
Increase (Decrease) in Other Noncurrent Liabilities
Deferred income taxes
Deferred Income Tax Liabilities, Net
Security Exchange Name
Security Exchange Name
Intangible assets, net
Intangible Assets, Net (Excluding Goodwill)
South America
South America [Member]
Operating loss from continuing operations
Segment operating income (loss)
Operating loss from continuing operations
Operating Income (Loss)
Total current liabilities
Liabilities, Current
Unamortized Discount and Debt Issuance Cost
Debt Instrument, Unamortized Discount (Premium) And Debt Issuance Costs, Net, Noncurrent
Debt Instrument, Unamortized Discount (Premium) And Debt Issuance Costs, Net, Noncurrent
Number of renewal options
Lessee, Operating Lease, Number Of Renewal Options
Lessee, Operating Lease, Number Of Renewal Options
Number of geographical areas operating in (more than)
Number Of Geographical Areas Of Operation To Minimize Risks
Represents the number of geographical areas operated to minimize the potential impact of risks.
Schedule of Contract Assets and Liabilities
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
Performance Share Units
Performance Shares [Member]
Prepaid expenses and other, net
Prepaid Expense and Other Assets, Current
Outstanding (in dollars per share)
Outstanding (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
International Locations
Geographic Distribution, Foreign [Member]
Net cash provided by operating activities from continuing operations
Net Cash Provided by (Used in) Operating Activities, Continuing Operations
Commitments and Contingencies (Note 14)
Commitments and Contingencies
Share repurchases
Payments for Repurchase of Common Stock
Assets
Assets:
Assets [Abstract]
Property, Plant and Equipment [Table]
Property, Plant and Equipment [Table]
Accounting Policies [Abstract]
Accounting Policies [Abstract]
Cash, Cash Equivalents, and Restricted Cash
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]
Entity Address, State or Province
Entity Address, State or Province
Vested (in shares)
Vested (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Pre-tax amounts:
Accumulated Other Comprehensive Income Loss Before Tax [Abstract]
No Definition Available.
Payments for operating leases
Operating Lease, Payments
Accounts payable
Accounts Payable, Current
Retained earnings
Retained Earnings (Accumulated Deficit)
Operating lease right-of-use asset
Operating Lease, Right-of-Use Asset
Argentina
ARGENTINA
Real estate properties
Real Estate Investment [Member]
Purchases of common shares (in shares)
Treasury Stock, Shares, Acquired
Accumulated other comprehensive income (loss)
AOCI before Tax, Attributable to Parent
Earnings allocated to unvested shareholders
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Preferred stock, no par value, 1,000,000 shares authorized, no shares issued
Preferred Stock, Value, Issued
Loss from continuing operations (in dollars per share)
Income (Loss) from Continuing Operations, Per Diluted Share
Changes in accounts payable and accrued liabilities related to purchases of property, plant and equipment
Increase (Decrease) In Accounts Payable And Accrued Liabilities Related To Purchases Of Property, Plant And Equipment
The increase (decrease) during the reporting period of obligations included in accounts payable and accrued liabilities related to the purchase of property, plant and equipment.
Bahrain
BAHRAIN
Tangible asset impairment charges
Tangible Asset Impairment Charges
Abandonments included in depreciation
Impaired Assets to be Disposed of by Method Other than Sale, Amount of Impairment Loss
Income from discontinued operations (in dollars per share)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share
Restricted cash from initial capitalization of captive insurance company
Restricted Cash and Cash Equivalents for Initial Capitalization of Captive Company
Represents the amount of restricted cash and cash equivalents related to initial capitalization of the captive insurance company.
Treasury stock, at cost, 4,328,867 shares and 4,663,321 shares as of March 31, 2021 and September 30, 2020, respectively
Treasury Stock, Common, Value
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Non-cash operating and investing activities:
Non Cash Operating and Investing Activities [Abstract]
Non Cash Operating and Investing Activities
Valuation Approach and Technique [Domain]
Valuation Approach and Technique [Domain]
Other comprehensive income, net of income taxes:
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Other
Other Liabilities, Noncurrent
Other
Payments for (Proceeds from) Other Investing Activities
Operating Activities [Axis]
Operating Activities [Axis]
Dividend equivalent right performance units credited (in shares)
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Dividend Equivalent Right Credited
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Dividend Equivalent Right Credited
Stock-based compensation
APIC, Share-based Payment Arrangement, Increase for Cost Recognition
Segment Reconciling Items
Segment Reconciling Items [Member]
DICOM floating rate (in bolivars per dollar)
DICOM Floating Rate
DICOM floating rate used by Venezuela.
Treasury Stock
Treasury Stock, Shares [Abstract]
Inventories of materials and supplies, net
Inventory, Net
Drilling services
Drilling services
Revenue from Contract with Customer, Excluding Assessed Tax
Measurement Frequency [Domain]
Measurement Frequency [Domain]
Concentration percentage
Concentration Risk, Percentage
Business Acquisition [Axis]
Business Acquisition [Axis]
After-tax amounts:
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Geographical [Domain]
Geographical [Domain]
Settlement
Settlement expense
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement
Statement [Line Items]
Statement [Line Items]
Schedule of Shares Attributable to Outstanding Equity Awards Excluded from the Calculation of Diluted Earnings Per Share
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Short-term investments
Short-term Investments, Fair Value Disclosure
Fair value portion of short-term investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.
Contingent earnout liability
Business Combination, Contingent Consideration, Liability, Noncurrent
Measurement Input Type [Domain]
Measurement Input Type [Domain]
Early termination revenue
Early Termination Revenue
Revenue related to early termination of contract.
Statement [Table]
Statement [Table]
Type of Restructuring [Domain]
Type of Restructuring [Domain]
Interest cost
Defined Benefit Plan, Interest Cost
Statistical Measurement [Axis]
Statistical Measurement [Axis]
Credit Facility [Axis]
Credit Facility [Axis]
Preferred stock, shares issued (in shares)
Preferred Stock, Shares Issued
Monte Carlo simulation
Valuation Technique, Monte Carlo Simulation [Member]
Valuation Technique, Monte Carlo Simulation [Member]
Number of rigs, held-for -sale
Number of Rigs, Held-for -Sale
Number of Rigs, Held-for -Sale
Weighted Average
Weighted Average [Member]
Restructuring and Related Activities [Abstract]
Restructuring and Related Activities [Abstract]
Entity Small Business
Entity Small Business
Principles of Consolidation
Consolidation, Policy [Policy Text Block]
Increase (Decrease) in Shareholders' Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Operating revenues
Revenue Recognition [Abstract]
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV [Domain]
DEBT
Debt Disclosure [Text Block]
Selling, general and administrative
Selling, General and Administrative Expenses [Member]
Amendment Flag
Amendment Flag
Schedule of Computation of Basic and Diluted Earnings Per Share
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Weighted average shares outstanding:
Denominator:
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Net liabilities at beginning of period
Net liabilities at end of period
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value
Adjustment for diluted earnings (loss) per share:
Dilutive Securities, Effect on Basic Earnings Per Share [Abstract]
International Solutions
International Solutions Segment [Member]
Represents the International Solutions segment, a reportable segment of the entity.
Corporate
Investments and corporate operations
Corporate, Non-Segment [Member]
Borrowings outstanding
Long-term Line of Credit
Other current assets
Other Current, Assets, Fair Value Disclosure
Represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with fair value disclosures required in footnote disclosures to financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This element represents the fair value of assets categorized as other current assets which are not in and of themselves material enough to require separate disclosure.
Foreign exchange rate (in bolivars per dollar)
Foreign Currency Exchange Rate, Translation
Fair Value Measurement of Financial Instruments
Fair Value Measurement, Policy [Policy Text Block]
Amounts reclassified from accumulated other comprehensive loss
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent
Net cash provided by operating activities
Net Cash Provided by (Used in) Operating Activities
Additional cash restricted at the election of management for potential insurance claims
Restricted Cash and Cash Equivalents at Election of Management for Potential Insurance Claims
Represents the amount of cash and cash equivalents restricted at the election of management for potential insurance claims.
Entity Central Index Key
Entity Central Index Key
RESTRUCTURING CHARGES
Restructuring and Related Activities Disclosure [Text Block]
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Noncurrent liabilities - discontinued operations
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent
Financial Instruments [Domain]
Financial Instruments [Domain]
Allowance for Credit Losses
Credit Loss, Financial Instrument [Policy Text Block]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class [Axis]
Expected return on plan assets
Defined Benefit Plan, Expected Return (Loss) on Plan Assets
Schedule of Supplemental Fair Value Information about Long-Term Fixed-Rate Debt
Fair Value, by Balance Sheet Grouping [Table Text Block]
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Schedule of Intangible Assets Arising from Business Acquisitions
Schedule of Finite-Lived Intangible Assets [Table Text Block]
2018 Credit Facility
2018 Credit Facility [Member]
2018 Credit Facility [Member]
Geographical [Axis]
Geographical [Axis]
SUBSEQUENT EVENTS
Subsequent Events [Text Block]
Segments [Domain]
Segments [Domain]
Letter of Credit - Instrument 3
Bilateral Line Of Credit With Bank Two [Member]
Represents the second bilateral line of credit with a bank.
Statement of Cash Flows [Abstract]
Statement of Cash Flows [Abstract]
Income tax on minimum pension liability adjustments
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax, Attributable to Parent
Long-Lived Tangible Asset [Axis]
Long-Lived Tangible Asset [Axis]
Schedule of Restricted Stock Awards and Performance Share Units and Changes in Restricted Stock and Performance Share Units Outstanding
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
Income Statement Location [Axis]
Income Statement Location [Axis]
Allowance for accounts receivable
Accounts Receivable, Allowance for Credit Loss, Current
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Income Statement Location [Domain]
Income Statement Location [Domain]
Cash flows from financing activities:
Net Cash Provided by (Used in) Financing Activities [Abstract]
Vesting of restricted stock awards, net of shares withheld for employee taxes (in shares)
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings
Selling, general and administrative
Corporate selling, general and administrative costs, corporate depreciation and corporate restructuring charges
Selling, General and Administrative Expense
Numerator for basic earnings (loss) per share:
Profit (Loss) Basic [Abstract]
Stockholders' Equity Note [Abstract]
Stockholders' Equity Note [Abstract]
Amortization expense
Amortization of Intangible Assets
Proceeds from sale of subsidiary
Proceeds from Divestiture of Interest in Consolidated Subsidiaries
Other assets, net
Other Assets, Noncurrent
BUSINESS SEGMENTS AND GEOGRAPHIC INFORMATION
Segment Reporting Disclosure [Text Block]
Cash and cash equivalents
Cash and Cash Equivalents, Fair Value Disclosure
2018 Credit Facility, Due November 2024
2018 Credit Facility, Due November 2024 [Member]
2018 Credit Facility, Due November 2024
Loss from continuing operations
Loss from continuing operations
Loss from continuing operations
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent
Offshore Gulf of Mexico
Offshore Gulf of Mexico [Member]
Represents the Offshore Gulf of Mexico, a reportable segment of the entity.
Total assets
Assets
Assets
Total other noncurrent assets
Assets, Noncurrent, Other than Noncurrent Investments and Property, Plant and Equipment
Outstanding (in shares)
Outstanding (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Title of 12(b) Security
Title of 12(b) Security
Disposal Group Classification [Axis]
Disposal Group Classification [Axis]
Gain (loss) resulting from the change in the fair value of investments
Equity Securities, FV-NI, Gain (Loss)
Income from discontinued operations before income taxes
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax
Net
Finite-Lived Intangible Assets, Net
Subsequent Event Type [Axis]
Subsequent Event Type [Axis]
Geographic Distribution [Axis]
Geographic Distribution [Axis]
Cumulative inflation rate before a country is considered highly inflationary (as a percent)
Cumulative Inflation Rate before Considered Highly Inflationary
Represents the cumulative inflation rate before a country is considered highly inflationary.
Interest expense
Interest Expense
Number of common shares authorized to be repurchased (up to) (in shares)
Stock Repurchase Program, Number of Shares Authorized to be Repurchased
Depreciation and amortization
Depreciation, Depletion and Amortization
Adjustment tax expense related to equity compensation
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount
Discontinued operations
Discontinued Operations [Member]
Schedule of Description of Recent Accounting Pronouncements and Analysis of the Effects on the Financial Statements
Accounting Standards Update and Change in Accounting Principle [Table Text Block]
Product and Service [Axis]
Product and Service [Axis]
Proceeds from asset sales
Proceeds from Sale of Productive Assets
2018 Credit Facility, Due November 2025
2018 Credit Facility, Due November 2025 [Member]
2018 Credit Facility, Due November 2025
Other assets, net
Other Noncurrent Assets [Member]
Valuation Approach and Technique [Axis]
Valuation Approach and Technique [Axis]
Supplemental disclosure of cash flow information:
Supplemental Cash Flow Elements [Abstract]
Other
Other Segments [Member]
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Net income (loss) attributable to parent, basic
Net Income (Loss) Available to Common Stockholders, Basic
Level 1
Fair Value, Inputs, Level 1 [Member]
Number of international locations
Number Of International Locations
The number of international locations.
Inventories of materials and supplies
Increase (Decrease) in Inventories
Fair Value, Recurring and Nonrecurring [Table]
Fair Value, Recurring and Nonrecurring [Table]
Phantom Share Units (PSUs)
Phantom Share Units (PSUs) [Member]
Rotational Inventory
Rotational Inventory [Member]
Rotational Inventory [Member]
Accounts payable
Increase (Decrease) in Accounts Payable
Performance Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Cash dividends paid (in dollars per share)
Common Stock, Dividends, Per Share, Cash Paid
Debt Instrument [Axis]
Debt Instrument [Axis]
Additional Paid-In Capital
Additional Paid-in Capital [Member]
Operating Segment
Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Line Items]
Company 2025 Notes
Company 2025 Notes [Member]
Company 2025 Notes [Member]
Accrued liabilities
Increase (Decrease) in Accrued Liabilities
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Balance (in shares)
Balance (in shares)
Shares, Issued
Loss from continuing operations (in dollars per share)
Income (Loss) from Continuing Operations, Per Basic Share
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Abstract]
Drilling services equipment
Machinery and Equipment [Member]
Operating Activities [Domain]
Operating Activities [Domain]
Common stock, shares outstanding (in shares)
Common Stock, Shares, Outstanding
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Abstract]
Other
Other Operating Income
Operating costs and expenses
Operating Costs and Expenses [Abstract]
Subsequent Event
Subsequent Event [Member]
Letters of credit outstanding
Letters of Credit Outstanding, Amount
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized
Concentration Risk Type [Axis]
Concentration Risk Type [Axis]
Effect of dilutive shares from stock options, restricted stock and performance units (in shares)
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements
Property, plant and equipment, gross
Property, Plant and Equipment, Gross
Proceeds from stock option exercises
Proceeds from Stock Options Exercised
Inventory Scrap and Obsolete, Capital Spares
Inventory Scrap and Obsolete Capital Spares [Member]
Inventory Scrap and Obsolete Capital Spares
Schedule of Financial Information of Reportable Segments
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Effect of reallocating undistributed earnings of unvested shareholders
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units
Payment received/accrued and deferred
Contract with Customer, Liability, Increase (Decrease)
Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration from customer has been received or is due.
Income Statement [Abstract]
Income Statement [Abstract]
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent [Member]
(Gain) loss on sale of assets
(Gain) loss on sale of assets
Gain (loss) on sale of assets
Gain (Loss) on Disposition of Assets
Expected amortization in 2025
Finite-Lived Intangible Asset, Expected Amortization, Year Four
Prepaid expenses and other
Increase (Decrease) in Prepaid Expense and Other Assets
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Net cash used in operating activities from discontinued operations
Cash Provided by (Used in) Operating Activities, Discontinued Operations
Additions
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases
Disposal Groups, Including Discontinued Operations [Table]
Disposal Groups, Including Discontinued Operations [Table]
Unamortized Discount and Debt Issuance Cost
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net
Current Assets:
Current Assets
Assets, Current [Abstract]
Comprehensive loss
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Capitalized cost
Capitalized Contract Cost, Net
Restructuring Reserve [Roll Forward]
Restructuring Reserve [Roll Forward]
Numerator:
Net Income (Loss) Available to Common Stockholders, Basic [Abstract]
Capital expenditures
Payments to Acquire Property, Plant, and Equipment
City Area Code
City Area Code
Consolidation Items [Domain]
Consolidation Items [Domain]
Document Period End Date
Document Period End Date
Revenue from Contracts with Customers
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Fair Value
Business Combination, Contingent Consideration, Liability
GOODWILL AND INTANGIBLE ASSETS
Goodwill and Intangible Assets Disclosure [Text Block]
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment [Abstract]
Acquisition of Drilling Technology Companies
Drilling Technology Companies Acquisitions [Member]
This member represents information regarding drilling technology companies.
Disaggregation of Revenue [Table]
Disaggregation of Revenue [Table]
Schedule of Compensation Cost for Stock-Based Payment Arrangements
Share-based Payment Arrangement, Cost by Plan [Table Text Block]
Stock-based compensation
Share-based Payment Arrangement, Noncash Expense
Share repurchases
Stock Repurchased During Period, Value
Investments
Equity Securities, FV-NI
Accounts Payable
Accounts Payable [Member]
Domestic Non Super Spec Asset Group
Domestic Non Super Spec Asset Group [Member]
Domestic Non Super Spec Asset Group
Revenue Volatility
Measurement Input, Revenue Volatility [Member]
Measurement Input, Revenue Volatility [Member]
Other
Proceeds from (Payments for) Other Financing Activities
Payments for employee taxes on net settlement of equity awards
Payment, Tax Withholding, Share-based Payment Arrangement
Vesting of restricted stock awards, net of shares withheld for employee taxes
Restricted Stock, Value, Shares Issued Net of Tax Withholdings
Cover [Abstract]
Cover [Abstract]
From continuing operations
Income (Loss) from Continuing Operations, Diluted
This element represents the income or loss from continuing operations adjusted for undistributed earnings allocated to participating securities and the effect of reallocating undistributed earnings of unvested shareholders in the calculation of diluted earnings per share.
Schedule of Restructuring and Related Costs
Restructuring and Related Costs [Table Text Block]
Measurement Input Type [Axis]
Measurement Input Type [Axis]
Goodwill additions
Goodwill, Acquired During Period
Segment Reporting Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Abstract]
Segment Reporting Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Abstract]
Payment amounts
Measurement Input, Payment Amount [Member]
Measurement Input, Payment Amount [Member]
Moving related expenses
Moving Related Expenses [Member]
Moving Related Expenses
Estimated useful lives
Property, Plant and Equipment, Useful Life
Book Value
Long-term Debt
Drilling services operating expenses, excluding depreciation and amortization
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Abstract]
Restricted cash
Restricted cash
Restricted Cash and Cash Equivalents
Customer relationships
Customer Relationships [Member]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Axis]
Income (loss) from discontinued operations
Adjustment for (income) loss from discontinued operations
Income (loss) from discontinued operations
From discontinued operations
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent
Total operating costs and expenses
Costs and Expenses
Equity Components [Axis]
Equity Components [Axis]
Restricted Stock Awards
Restricted Stock [Member]
Share-based Payment Arrangement [Abstract]
Share-based Payment Arrangement [Abstract]
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Minimum
Minimum [Member]
Number of months of unsatisfied performance obligations represent in our backlog relating to contract that currently contain month-to-month terms
Number Of Months Of Unsatisfied Performance Obligations Represented In Backlog Contracts With Month To Month Terms
The number of months of unsatisfied performance obligations represented in entity's backlog for contracts that currently contain month-to-month terms.
Balance Sheet Location [Domain]
Balance Sheet Location [Domain]
Weighted-average price per share (in dollars per share)
Share Based Compensation Arrangement by Share Based Payment Award, Per Share Weighted Average Price
Represents the weighted-average price per share of the shares excluded from the calculation of diluted earnings per share because their inclusion would have been anti-dilutive.
Notification Fee
Notification Fee [Member]
Notification Fee [Member]
Probabilities
Measurement Input, Probability [Member]
Measurement Input, Probability [Member]
Other operating expenses
Other Cost of Operating Revenue
Recognized net actuarial loss
Defined Benefit Plan, Amortization of Gain (Loss)
Forfeited (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Face Amount
Long-term Debt, Current Maturities, Gross
Long-term Debt, Current Maturities, Gross
(Gain) loss on sale of assets
Gain (Loss) on Disposition of Other Assets
Entity Interactive Data Current
Entity Interactive Data Current
United States
UNITED STATES
Net pension expense
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Schedule of Restricted Cash and Cash Equivalents
Restrictions on Cash and Cash Equivalents [Table Text Block]
FAIR VALUE MEASUREMENT OF FINANCIAL INSTRUMENTS
Fair Value Disclosures [Text Block]
Cash flows from operating activities:
Net Cash Provided by (Used in) Operating Activities [Abstract]
SHAREHOLDERS' EQUITY
Stockholders' Equity Note Disclosure [Text Block]
Purchase commitments for equipment, parts and supplies
Purchase Obligation
Summary of Significant Accounting Policies [Line Items]
Summary Of Significant Accounting Policies [Line Items]
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.
Expected amortization in remainder 2021
Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year
Weighted Average Grant Date Fair Value per Share
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Cumulative Effect, Period of Adoption, Adjustment
Cumulative Effect, Period of Adoption, Adjustment [Member]
TerraVici
TerraVici Drilling Solutions, Inc. (TerraVici) [Member]
TerraVici Drilling Solutions, Inc. (TerraVici)
Additional paid-in capital
Additional Paid in Capital, Common Stock
Entity Registrant Name
Entity Registrant Name
Subsequent Event Type [Domain]
Subsequent Event Type [Domain]
Statement of Stockholders' Equity [Abstract]
Statement of Stockholders' Equity [Abstract]
Asset impairment charge
Asset Impairment Charges
Intersegment
Intersegment Eliminations [Member]
Schedule of Reconciliation of Segment Operating Income (Loss) to Income from Continuing Operations Before Income Taxes
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]
Total consideration
Proceeds from Sale of Property, Plant, and Equipment
Letter of Credit - Instrument 1
Bilateral Line Of Credit With Bank One [Member]
Represents the first bilateral line of credit with a bank.
Other
Property, Plant and Equipment, Other Types [Member]
Summary Of Significant Accounting Policies [Table]
Summary Of Significant Accounting Policies [Table]
Disclosure of information included in summary of significant accounting policies.
Dividends paid
Payments of Ordinary Dividends, Common Stock
Research and development
Research and Development Expense [Member]
In-Process Drilling Equipment
In-Process Drilling Equipment [Member]
In-Process Drilling Equipment [Member]
Consolidation Items [Axis]
Consolidation Items [Axis]
Accrued Liabilities
Accrued Liabilities [Member]
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Impairments of goodwill
Goodwill, Impairment Loss
Accounts receivable, net of allowance of $1,806 and $1,820, respectively
Accounts Receivable, after Allowance for Credit Loss, Current
Accrued restructuring charges at September 30, 2020
Accrued restructuring charges at March 31, 2021
Restructuring Reserve
Stop-loss program, maximum amount of claim
Stop-Loss Insurance Program, Claim Threshold
Stop-Loss Insurance Program, Claim Threshold
Other
Adjustments to Additional Paid in Capital, Other
Schedule of Cash and Cash Equivalents
Schedule of Cash and Cash Equivalents [Table Text Block]
Vested and expected to vest (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Vested and Expected to Vest, Outstanding, Number
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Vested and Expected to Vest, Outstanding, Number
Unsecured Standalone Line of Credit Facility
Unsecured Standalone Line Of Credit Facility [Member]
Represents the unsecured standalone line of credit facility which is purposed for the issuance of bid and performance bonds, as needed, for international operations.
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
From continuing operations
Income (Loss) from Continuing Operations, Basic
This element represents the income or loss from continuing operations adjusted for undistributed earnings allocated to participating securities in the calculation of basic earnings per share.
Restructuring charges
Restructuring Costs
Schedule of Components of Accumulated Other Comprehensive Loss
Comprehensive Income (Loss) [Table Text Block]
Restructuring Type [Axis]
Restructuring Type [Axis]
Cash payments
Payments for Restructuring
Fair Value Measurement Inputs and Valuation Techniques [Table]
Fair Value Measurement Inputs and Valuation Techniques [Table]
Cash
Cash
Disposed of by Sale
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Goodwill
Goodwill
Schedule of Quantitative Information about Level 3 Unobservable Inputs
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
Other comprehensive income
Other comprehensive income
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Document Transition Report
Document Transition Report
North America Solutions
North America Solutions [Member]
Represents the U.S. Land segment, a reportable segment of the entity.
Other income (expense)
Other income (expense)
Nonoperating Income (Expense) [Abstract]
Dividends declared (in dollars per share)
Cash dividends declared (in dollars per share)
Common Stock, Dividends, Per Share, Declared
Level 2
Fair Value, Inputs, Level 2 [Member]
Document Quarterly Report
Document Quarterly Report
Unobservable Input
Business Combination, Contingent Consideration, Liability, Measurement Input
Components of the net periodic pension expense (benefit)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Total assets measured at fair value
Assets, Fair Value Disclosure
DISCONTINUED OPERATIONS
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
Income from discontinued operations (in dollars per share)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share
Subsequent Event [Line Items]
Subsequent Event [Line Items]
Accounting Standards Update [Extensible List]
Accounting Standards Update [Extensible List]
Cumulative Effect, Period of Adoption [Axis]
Cumulative Effect, Period of Adoption [Axis]
Credit Facility [Domain]
Credit Facility [Domain]
Diluted (in shares)
Denominator for diluted earnings (loss) per share – adjusted weighted-average shares (in shares)
Weighted Average Number of Shares Outstanding, Diluted
Schedule of Assets and Liabilities Measured at Fair Value
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
Letters of Credit
Letter of Credit [Member]
Net loss (in dollars per share)
Earnings Per Share, Basic
Entity File Number
Entity File Number
Forfeited (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Debt Disclosure [Abstract]
Debt Disclosure [Abstract]
Geographic Distribution [Domain]
Geographic Distribution [Domain]
Amortization of debt discount and debt issuance costs
Amortization of Debt Issuance Costs and Discounts
Net cash used in financing activities
Net Cash Provided by (Used in) Financing Activities
Revenue, remaining performance obligation, amount
Revenue, Remaining Performance Obligation, Amount
Stock-based compensation expense
Share-based Payment Arrangement, Expense
Revenue recognized during the period
Contract With Customer, Liability, Including New Contract Revenue, Recognized
Contract With Customer, Liability, Including New Contract Revenue, Recognized
Balance Sheet Location [Axis]
Balance Sheet Location [Axis]
Common stock, $.10 par value, 160,000,000 shares authorized, 112,222,865 and 112,151,563 shares issued as of March 31, 2021 and September 30, 2020, respectively, and 107,893,998 and 107,488,242 shares outstanding as of March 31, 2021 and September 30, 2020, respectively
Common Stock, Value, Issued
Investments
Long-term Investments
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Abstract]
Disposal Group Name [Axis]
Disposal Group Name [Axis]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets [Line Items]
Document Fiscal Year Focus
Document Fiscal Year Focus
Expected amortization in 2023
Finite-Lived Intangible Asset, Expected Amortization, Year Two
Other Noncurrent Assets:
Assets, Noncurrent [Abstract]
Book Value
Long-term Debt, Current Maturities
Assets held in a non-qualified supplemental savings plan
Deferred Compensation Plan Assets
Entity Current Reporting Status
Entity Current Reporting Status
Total gains or losses included in earnings
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings
Interest and dividend income
Investment Income, Interest and Dividend
Change in Contract with Customer, Liability [Abstract]
Change in Contract with Customer, Liability [Abstract]
Retirement Benefits [Abstract]
Retirement Benefits [Abstract]
Subsequent Event [Table]
Subsequent Event [Table]
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-term Debt Instruments [Table]
Granted (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Cash flows from investing activities:
Net Cash Provided by (Used in) Investing Activities [Abstract]
Common stock, shares issued (in shares)
Common Stock, Shares, Issued
Cash and cash equivalents
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value
Insurance coverage deductibles range for claims which occur outside or inside the United States
Self Insurance Coverage Deductibles Range for Claims Incurred
Represents the deductible amounts of claims that are covered by insurance.
Risk free rate
Measurement Input, Risk Free Interest Rate [Member]
Operating lease liability
Operating Lease, Liability
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Long-term debt, net
Book Value
Carrying value of long-term fixed-rate debt
Long-term Debt, Excluding Current Maturities
Segment Reporting [Abstract]
Segment Reporting [Abstract]
Accounts receivable
Increase (Decrease) in Accounts Receivable
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Statement of Comprehensive Income [Abstract]
Statement of Comprehensive Income [Abstract]
Total shareholders’ equity
Beginning balance
Ending balance
Stockholders' Equity Attributable to Parent
NATURE OF OPERATIONS
Nature of Operations [Text Block]
Concentration Risk Type [Domain]
Concentration Risk Type [Domain]
Total liabilities and shareholders' equity
Liabilities and Equity
Accumulated other comprehensive loss
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax
INCOME TAXES
Income Tax Disclosure [Text Block]
Total noncurrent liabilities
Liabilities, Noncurrent
Entity Address, City or Town
Entity Address, City or Town
Portion at Fair Value Measurement
Portion at Fair Value Measurement [Member]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Financial Instrument [Axis]
Financial Instrument [Axis]
Intellectual property
Intellectual Property [Member]
Potentially dilutive shares excluded as anti-dilutive (in shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Other
Other Noncash Income (Expense)
Weighted Average Estimated Useful Lives
Finite-Lived Intangible Asset, Useful Life
Equity Component [Domain]
Equity Component [Domain]
Cash, cash equivalents, and short-term investments
Cash, Cash Equivalents, and Short-term Investments
Liabilities:
Liabilities [Abstract]
Domestic and International Conventional, FlexRig3, and FlexRig4 Asset Groups
Domestic And International Conventional, FlexRig3, And FlexRig4 Asset Groups [Member]
Domestic And International Conventional, FlexRig3, And FlexRig4 Asset Groups [Member]
Other noncurrent assets
Increase (Decrease) in Other Noncurrent Assets
Property, plant and equipment, net
Property, plant and equipment, net
Property, Plant and Equipment, Net
Expected amortization in 2024
Finite-Lived Intangible Asset, Expected Amortization, Year Three
Construction in progress
Construction in Progress [Member]
International Solutions Drilling Risks
International Drilling Operations Policy, [Policy Text Block]
Disclosure of accounting policy for international drilling operations.
Entity Tax Identification Number
Entity Tax Identification Number
STOCK-BASED COMPENSATION
Share-based Payment Arrangement [Text Block]
Net loss
Net loss
Net income (loss)
Net Income (Loss) Attributable to Parent
Cumulative effect adjustment for adoption of ASU No. 2016-13
Cumulative Effect Adjustment For Accounting Standards Update
Cumulative Effect Adjustment For Accounting Standards Update
Change in assets and liabilities:
Increase (Decrease) in Operating Capital [Abstract]
Trade name
Trade Names [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, RISKS AND UNCERTAINTIES
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]
Total current assets
Assets, Current
Current Fiscal Year End Date
Current Fiscal Year End Date
Earnings Per Share [Abstract]
Earnings Per Share [Abstract]
Restructuring Charges
Charges
Restructuring Charges
Long-term debt
Long-term Debt, Excluding Current Maturities [Abstract]
Unrecognized net actuarial loss
Defined Benefit Pension Plan
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Houston Assembly Facility
Houston Assembly Facility [Member]
Houston Assembly Facility
Disposal Group Name [Domain]
Disposal Group Name [Domain]
Shareholders' Equity:
Stockholders' Equity Attributable to Parent [Abstract]
Changes in accounts receivable, property, plant and equipment and other noncurrent assets related to the sale of equipment
Increase (Decrease) In Accounts Receivable, Property, Plant And Equipment And Other Long-Term Assets Related To The Sale Of Equipment
Increase (Decrease) In Accounts Receivable, Property, Plant And Equipment And Other Long-Term Assets Related To The Sale Of Equipment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Developed technology
Developed Technology Rights [Member]
Proceeds from sale of investments
Proceeds from Sale of Short-term Investments
Document Fiscal Period Focus
Document Fiscal Period Focus
U.S. government and federal agency securities
US Government Corporations and Agencies Securities [Member]
Unobservable Input
Business Combination, Contingent Consideration, Liability, Measurement Input, Payment Amount
Business Combination, Contingent Consideration, Liability, Measurement Input, Payment Amount
Treasury Stock
Treasury Stock, Common [Member]
Supplemental fair value information about long-term fixed-rate debt
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Minimum pension liability adjustments, net of income taxes of $(0.1) million and $(0.3) million for the three and six months ended March 31, 2021, respectively, and $(0.2) million and $(0.3) million for the three and six months ended March 31, 2020, respectively
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent
Net income (loss) attributable to parent, diluted
Net Income (Loss) Available to Common Stockholders, Diluted
Other Foreign
Other Foreign [Member]
Represents other foreign countries.
Employer contribution
Defined Benefit Plan, Plan Assets, Contributions by Employer
HPIDC 2025 Notes
Unsecured Senior Notes Issued2015 [Member]
Represents the unsecured senior notes issued on March 19, 2015.
Cash paid during the period:
Supplemental Cash Flow Information [Abstract]
Assets held-for-sale
Assets Held-for-sale, Not Part of Disposal Group, Current
Lease contract term
Lessor, Operating Lease, Term of Contract
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree [Domain]
Less long-term debt due within one year
Long-term Debt, Current Maturities [Abstract]
Entity Filer Category
Entity Filer Category
Common Stock
Common Stock [Member]
Product and Service [Domain]
Product and Service [Domain]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Long-Lived Tangible Asset [Domain]
Long-Lived Tangible Asset [Domain]
Concentration Risk Benchmark [Domain]
Concentration Risk Benchmark [Domain]
Geographic Concentration Risk
Geographic Concentration Risk [Member]
Schedule of Property, Plant and Equipment
Property, Plant and Equipment [Table Text Block]
Lease Contractual Term [Axis]
Lease Contractual Term [Axis]
Available borrowing capacity
Line of Credit Facility, Remaining Borrowing Capacity
Number of letters of credit outstanding
Number Of Letters Of Credit Outstanding
Number Of Letters Of Credit Outstanding
Gross Carrying Amount
Finite-Lived Intangible Assets, Gross
Operating Revenue
Revenue Benchmark [Member]
Interest rate
Debt Instrument, Interest Rate, Stated Percentage
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Dividends payable
Dividends Payable, Current
Revenue, remaining performance obligation, period
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
Provision for credit loss
Accounts Receivable, Credit Loss Expense (Reversal)
Adjustment for basic earnings (loss) per share
Adjustment for Basic Earnings Per Share [Abstract]
Accumulated depreciation
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Dividend equivalent right performance units credited (in dollars per share)
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Dividend Equivalent Right Credited, Weighted Average Grant Date Fair Value
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Dividend Equivalent Right Credited, Weighted Average Grant Date Fair Value
Diluted earnings (loss) per common share:
Earnings Per Share, Diluted [Abstract]
Gain on sale of subsidiary
Gain (Loss) on Disposition of Stock in Subsidiary
Exercise of employee stock options, net of shares withheld for employee taxes (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Net decrease in cash and cash equivalents and restricted cash
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
Total other income (expense)
Total other income (expense)
Nonoperating Income (Expense)
Interim Financial Information
Basis of Accounting, Policy [Policy Text Block]
Drilling services operating
Contract Drilling Costs, Excluding Depreciation And Amortization [Member]
Contract Drilling Costs, Excluding Depreciation And Amortization [Member]
Preferred Stock
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Basic (in shares)
Denominator for basic earnings (loss) per share – weighted-average shares (in shares)
Weighted Average Number of Shares Outstanding, Basic
Subsequent Events [Abstract]
Subsequent Events [Abstract]
Treasury stock, shares (in shares)
Treasury Stock, Common, Shares
Employee termination benefits
Employee Severance [Member]
Carrying Value
Reported Value Measurement [Member]
REVENUE FROM CONTRACTS WITH CUSTOMERS
Revenue from Contract with Customer [Text Block]
Interest paid
Interest Paid, Excluding Capitalized Interest, Operating Activities
Gain on sale of subsidiary
Gain (Loss) on Disposition of Stock in Subsidiary or Equity Method Investee
Fair value of long-term fixed-rate debt
Long-term Debt, Fair Value
Expected amortization in 2022
Finite-Lived Intangible Asset, Expected Amortization, Year One
Total operating revenues
Revenues
Revenues
Aggregate foreign currency gain (loss)
Foreign Currency Transaction Gain (Loss), before Tax
Income tax benefit
Income Tax Expense (Benefit)
Income tax paid (received), net
Income Taxes Paid, Net
Cash and cash equivalents and restricted cash, beginning of period
Cash and cash equivalents and restricted cash, end of period
Total cash, cash equivalents, and restricted cash
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Lease renewal term
Lessor, Operating Lease, Renewal Term
Accrued liabilities
Accrued Liabilities, Current
Net loss (in dollars per share)
Earnings Per Share, Diluted
Schedule of Revenues from External Customers by Country
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
Local Phone Number
Local Phone Number
Cumulative Effect, Period of Adoption [Domain]
Cumulative Effect, Period of Adoption [Domain]
Schedule of Total Assets by Reportable Segment
Reconciliation of Assets from Segment to Consolidated [Table Text Block]
Probability analysis
Valuation Technique, Probability Analysis [Member]
Valuation Technique, Probability Analysis [Member]
Income tax provision
Discontinued Operation, Tax Effect of Discontinued Operation
United Arab Emirates
UNITED ARAB EMIRATES
Schedule of Reconciliation of Changes in the Fair Value of Financial Assets and Liabilities Classified as Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Reconciliation of changes in the fair value of our financial assets and liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Face Amount
Face Amount
Long-term Debt, Gross
Intercompany Eliminations
Consolidation, Eliminations [Member]
Schedule of Components of Unsecured Long-Term Debt Outstanding
Schedule of Long-term Debt Instruments [Table Text Block]
Depreciation expense
Depreciation
Entity Address, Address Line One
Entity Address, Address Line One
Numerator for diluted earnings (loss) per share:
Profit (Loss) Diluted [Abstract]
Contract liabilities balance at beginning of period
Contract liabilities balance at period end
Contract with Customer, Liability
Entity Emerging Growth Company
Entity Emerging Growth Company
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table]
Exercise of employee stock options, net of shares withheld for employee taxes
Stock Issued During Period, Value, Stock Options Exercised
Schedule of Finite-Lived Intangible Assets [Table]
Schedule of Finite-Lived Intangible Assets [Table]
Underwriting expenses
General Insurance Expense
Unamortized Discount and Debt Issuance Cost
Debt Instrument, Unamortized Discount (Premium) And Debt Issuance Costs, Net, Current
Debt Instrument, Unamortized Discount (Premium) And Debt Issuance Costs, Net, Current
Deferred income tax benefit
Deferred Income Tax Expense (Benefit)
Tubulars
Tubular Goods [Member]
Maximum borrowing capacity
Line of Credit Facility, Maximum Borrowing Capacity
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Award Type [Axis]
Award Type [Axis]
Prepaid expenses and other, net
Prepaid Expenses and Other Current Assets [Member]
Accumulated Amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Lease Contractual Term [Domain]
Lease Contractual Term [Domain]
Maximum
Maximum [Member]
Preferred stock, shares authorized (in shares)
Preferred Stock, Shares Authorized
Gain (loss) on investment securities
(Gain) loss on investment securities
Gain (loss) on investment securities
Gain (Loss) on Investments
Dividends declared
Dividends, Common Stock, Cash
Purchase of investments
Payments to Acquire Short-term Investments
Retained Earnings
Retained Earnings [Member]
Measurement Basis [Axis]
Measurement Basis [Axis]
Payment of contingent consideration from acquisition of business
Payment for Contingent Consideration Liability, Financing Activities
Schedule of Components of Net Periodic Benefit Cost
Schedule of Net Benefit Costs [Table Text Block]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Effective tax rate
Effective Income Tax Rate Reconciliation, Percent
Net cash used in investing activities
Net Cash Provided by (Used in) Investing Activities
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Accounts receivable, allowance for credit loss
Accounts Receivable, Allowance for Credit Loss
Award Type [Domain]
Award Type [Domain]
Other assets
Other Assets, Noncurrent, Fair Value Disclosure
Fair value portion of other noncurrent assets.
Noncurrent Liabilities:
Liabilities, Noncurrent [Abstract]
Long-term debt, gross
Long-term Debt, Unclassified [Abstract]
Schedule of Restructuring Reserve by Type of Cost
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]
Corporate debt securities
Corporate Debt Securities [Member]
Trading Symbol
Trading Symbol
Accumulated Other Comprehensive Income (Loss) [Table]
Accumulated Other Comprehensive Income (Loss) [Table]
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations and Disposal Groups [Abstract]
Disposal Group Classification [Domain]
Disposal Group Classification [Domain]
PROPERTY, PLANT AND EQUIPMENT
Property, Plant and Equipment Disclosure [Text Block]
Continuing Operations
Continuing Operations [Member]
Contract assets
Contract with Customer, Asset, after Allowance for Credit Loss
EARNINGS (LOSSES) PER COMMON SHARE
Earnings Per Share [Text Block]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Current Liabilities:
Liabilities, Current [Abstract]
Federal statutory income tax rate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Entity Shell Company
Entity Shell Company
Research and development
Research and Development Expense (Excluding Acquired in Process Cost)
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Recurring Fair Value Measurements
Fair Value, Recurring [Member]
Premium revenues and expenses
Premiums Earned, Net
Recently Issued Accounting Updates
New Accounting Pronouncements, Policy [Policy Text Block]
Discount rate
Measurement Input, Discount Rate [Member]
Statement of Financial Position [Abstract]
Statement of Financial Position [Abstract]
Basic earnings (loss) per common share:
Earnings Per Share, Basic [Abstract]
Short-term investments
Short-term Investments