Represents the number of former employees.

No definition available.

Name:	flna_NumberOfFormerEmployees
Namespace Prefix:	flna_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of cash paid into escrow for the settlement of litigation or for other legal issues during the period.

+ References

No definition available.

+ Details

Name:	flna_PaymentsForLegalSettlementsEscrowDeposits
Namespace Prefix:	flna_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

+ References

+ Details

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

- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

+ Details

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

- Definition

Amount of loss (reversal of loss) recognized for loss contingency liability. Includes, but is not limited to, effect of revision in previously reported estimate.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (j)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476148/220-40-50-22

+ Details

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

- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-9

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-4

+ Details

Name:	us-gaap_LossContingencyNewClaimsFiledNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_LitigationCaseAxis=flna_ViolationsOfFederalSecuritiesLawsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	srt_LitigationCaseAxis=flna_ShareholderDerivativeActionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=flna_ShareholderDerivativeActionsTexasCourtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=flna_ShareholderDerivativeActionsTexasStateCourtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=flna_ShareholderDerivativeActionsDelawareCourtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=flna_AntislappLawsuitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 10 - Contingencies (Details Textual) $ in Thousands								2 Months Ended	3 Months Ended		6 Months Ended		24 Months Ended
Note 10 - Contingencies (Details Textual) $ in Thousands	Jul. 23, 2026 USD ($)	Jun. 18, 2026 USD ($)	Nov. 12, 2025	Sep. 06, 2024	Aug. 06, 2024	Mar. 18, 2024	Jun. 30, 2022	Oct. 26, 2021	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Nov. 09, 2023	Dec. 31, 2025 USD ($)	Oct. 31, 2025 USD ($)
Estimated Litigation Liability									$ 32,750		$ 32,750			$ 32,750
Loss Contingency Accrual, Loss (Reversal of Loss)									0	$ 32,250	0	$ 35,250
Violations of Federal Securities Laws [Member]
Loss Contingency, New Claims Filed, Number							1	4
Litigation Settlement, Amount Awarded to Other Party		$ 31,250
Estimated Litigation Liability									$ 31,250		$ 31,250			$ 31,250
Violations of Federal Securities Laws [Member] \| Subsequent Event [Member]
Payments for Legal Settlements, Escrow Deposits	$ 31,250
Shareholder Derivative Actions [Member]
Loss Contingency, New Claims Filed, Number				2		2							5
Shareholder Derivative Actions, Texas Court [Member]
Loss Contingency, New Claims Filed, Number			4										3
Shareholder Derivative Actions, Texas State Court Member
Loss Contingency, New Claims Filed, Number													1
Shareholder Derivative Actions, Delaware Court [Member]
Loss Contingency, New Claims Filed, Number													1
Anti-SLAPP Lawsuit [Member]
Estimated Litigation Liability															$ 2,500
Number of Former Employees					2