XML 48 R39.htm IDEA: XBRL DOCUMENT v3.23.1

Shareholders Equity (Details) $ / shares in Units, $ in Thousands		3 Months Ended
	Jun. 11, 2021 shares	Mar. 31, 2023 USD ($) D $ / shares shares	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Apr. 24, 2022 $ / item shares	Jan. 01, 2022 shares	Jan. 31, 2017
Shareholders' Equity
Multiplying factor for exercise of warrants | $ / item					3
Percentage volume weighted average price of stock times factor must exceed sum of volume weighted average prices of second, third and fourth days before exercise					6.00%
Conversion, threshold percentage of market price		95.00%
Gain (loss) recognized for the change in liability | $		$ 34,314	$ (73,202)
Proceeds from issuance of common shares, net of issuance costs | $			257
5.10% senior notes due September 2023
Shareholders' Equity
Interest rate (as a percent)		5.10%		5.10%
0.75% senior exchangeable notes due January 2024
Shareholders' Equity
Interest rate (as a percent)		0.75%		0.75%			0.75%
5.75% senior notes due February 2025
Shareholders' Equity
Interest rate (as a percent)		5.75%		5.75%
7.25% senior notes due January 2026
Shareholders' Equity
Interest rate (as a percent)		7.25%
Common share warrants
Shareholders' Equity
Number of warrants received per common share held						0.40
Number of warrants issued	3,200,000
Number of business day notice period | D		20
Fair value of outstanding warrants | $		$ 46,300		$ 80,900
Gain (loss) recognized for the change in liability | $		$ 34,300	$ (73,200)
Warrants outstanding		2,500,000
Common Shares
Shareholders' Equity
Aggregate number of shares issued from the exercise of warrants		1,100,000
Number of shares which may be purchased by each right		1
Exercise price (in dollars per share) | $ / shares		$ 166.66667
Number of additional securities which may be issued due to the incentive share component					0.333

X

- Definition

Aggregate number of shares issued from the exercise of warrants.

+ References

No definition available.

+ Details

Name:	nbr_AggregateNumberOfSharesIssuedFromExerciseOfWarrants
Namespace Prefix:	nbr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Percentage of the market price for exercise price and the number of common shares issuable upon exercise subject to anti-dilution adjustments.

+ References

No definition available.

+ Details

Name:	nbr_AntiDilutionAdjustmentSharesPricePercentageOfMarketPrice
Namespace Prefix:	nbr_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the number of warrants issued.

+ References

No definition available.

+ Details

Name:	nbr_ClassOfWarrantOrRightIssued
Namespace Prefix:	nbr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of additional securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ References

No definition available.

+ Details

Name:	nbr_ClassOfWarrantOrRightNumberOfAdditionalSecuritiesCalledByEachWarrantOrRight
Namespace Prefix:	nbr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of warrants received per common share held.

+ References

No definition available.

+ Details

Name:	nbr_ClassOfWarrantOrRightNumberOfWarrantsReceivedByEachCommonShareHeld
Namespace Prefix:	nbr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Threshold percentage which the volume weighted average price of the common stock on the day before exercise must exceed the sum of the volume weighted average prices of common shares on each of the second, third and fourth days before exercise of warrants.

+ References

No definition available.

+ Details

Name:	nbr_MinimumPercentageWhichStockPriceBeforeExerciseMustExceedVolumeWeightedAverageStockPrice
Namespace Prefix:	nbr_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Multiplying factor for exercise of warrants by warrant holder.

+ References

No definition available.

+ Details

Name:	nbr_MultiplyingFactorForExerciseOfWarrants
Namespace Prefix:	nbr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of business day notice period.

+ References

No definition available.

+ Details

Name:	nbr_NumberOfBusinessDayNoticePeriod
Namespace Prefix:	nbr_
Data Type:	xbrli:integerItemType
Balance Type:	na
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_ClassOfStockLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: 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(a)(1))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4CC
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL109998890-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959

+ Details

Name:	us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

+ References

No definition available.

+ Details

Name:	us-gaap_WarrantsAndRightsOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_DebtInstrumentAxis=nbr_SeniorNotes5.10PercentageDueTwoZeroTwoThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=nbr_SeniorNotes0.75PercentageDueTwoZeroTwoFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=nbr_SeniorNotes5.75PercentageDueTwoZeroTwoFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=nbr_SeniorNotes7.25PercentageDueTwoZeroTwoSixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=nbr_CommonStockWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: