No definition available.

Name:	ltbr_CommonStockNetSharesIssuedDuringPeriod
Namespace Prefix:	ltbr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	ltbr_ReversalOfStockBasedCompensationExpenseUnderTrancheBasedPsas
Namespace Prefix:	ltbr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

Name:	ltbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsGrantedNumber
Namespace Prefix:	ltbr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	ltbr_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionsEquityInstrumentsOutstandingNumber
Namespace Prefix:	ltbr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	ltbr_ShareBasedCompensationRelatedToAcceleratedVesting
Namespace Prefix:	ltbr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

Name:	ltbr_SharebasedCompensationArrangementBySharebasedPaymentawardsGrantedWeightedAverageGrantDateFairValue
Namespace Prefix:	ltbr_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	ltbr_SharesWithheldToSatisfyTaxWithholdingRequirementsOnEquityAwards
Namespace Prefix:	ltbr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	ltbr_WeightedAverageGrantDateFairValue
Namespace Prefix:	ltbr_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

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

- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of noncash expense for share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

+ Details

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

- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(02)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

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

- Definition

Net number of non-option equity instruments granted to participants.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(01)
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_PlanNameAxis=ltbr_TwoThousandTwentyEquityIncentivePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=ltbr_IndependentMembersBoardOfDirectorsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=ltbr_ExternalConsultantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=ltbr_NewEmployeesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=ltbr_PerfomanceStockAwardMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=ltbr_TrancheBasedPSAsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=ltbr_AprilTwoZeroTwoFivePSAsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Stock-Based Compensation (Details Narrative) - USD ($)	3 Months Ended		6 Months Ended
Stock-Based Compensation (Details Narrative) - USD ($)	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Stock-based compensation expense			$ 3,940,038	$ 2,106,073
2020 Equity Incentive Plan [Member]
Total number of common stock available for future issuance	1,300,299		1,300,299
Restricted Stock Awards [Member]
Stock-based compensation expense	$ 1,300,000	$ 400,000	$ 2,600,000	$ 1,700,000
Unrecognized compensation cost	8,800,000		$ 8,800,000
Shares withheld to satisfy tax obligations			2,848	29,440
Net shares issued			48,428	92,843
Restricted stock awards, vested			51,276	122,283
Fair value of restricted stock awards, vested			$ 600,000	$ 1,000,000.0
Weighted average grant date fair value			$ 13.12	$ 8.63
Remaining weighted-average vesting period			2 years 14 days
Restricted Stock Awards [Member] \| Independent Members of Board of Directors [Member]
Awards, granted			53,155
Restricted Stock Awards [Member] \| External Consultant [Member]
Awards, granted			16,000
Restricted Stock Awards [Member] \| New Employees [Member]
Awards, granted			44,833
Stock-based compensation expense related to accelerated vesting				$ 500,000
Perfomance Stock Award [Member]
Stock-based compensation expense		200,000	$ 1,100,000	$ 200,000
Unrecognized compensation cost	$ 4,100,000		$ 4,100,000
Shares withheld to satisfy tax obligations			41,559
Net shares issued			58,442
Weighted average grant date fair value			$ 11.80	$ 6.99
Restricted stock awards, vested			100,001
Fair value of restricted stock awards, vested			$ 1,100,000
Remaining weighted-average vesting period			1 year 5 months 23 days
Perfomance Stock Award [Member] \| Tranche-based PSAs [Member]
Outstanding balance	1,013,738		1,013,738
Stock-based compensation expense	$ (200,000)		$ 600,000
PSAs granted			167,512
Reversal of stock-based compensation expense under tranche-based PSAs	700,000		$ 700,000
Perfomance Stock Award [Member] \| April 2025 PSAs [Member]
Stock-based compensation expense	$ 200,000	$ 200,000	$ 500,000	$ 200,000
PSAs granted			199,999