Percentage of dealer and service fees.

No definition available.

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Namespace Prefix:	trlc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of dealer manager fee.

+ References

No definition available.

+ Details

Name:	trlc_DealerManagerFeePercentage
Namespace Prefix:	trlc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Discount rate on net asset value per unit used to calculate distribution and dealer manager fee payable.

+ References

No definition available.

+ Details

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Namespace Prefix:	trlc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of distribution, dealer manager and service fees payable.

+ References

No definition available.

+ Details

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Namespace Prefix:	trlc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The percentage of estimated value per share to be paid each year for distribution fee.

+ References

No definition available.

+ Details

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Namespace Prefix:	trlc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The per unit value of estimated net assets.

+ References

No definition available.

+ Details

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Namespace Prefix:	trlc_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum percentage of outstanding units that can be repurchased.

+ References

No definition available.

+ Details

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Namespace Prefix:	trlc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The minimum period units are held to be part of unit repurchase.

+ References

No definition available.

+ Details

Name:	trlc_UnitsRepurchaseMinimumPeriodHeld
Namespace Prefix:	trlc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Total change in each class of partners' capital accounts during the year due to the sale of units. All partners include general, limited and preferred partners.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-5

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S45
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480100/505-10-S45-8

+ Details

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

- Definition

Value of units that were previously issued and have been repurchased during the year.

+ References

+ Details

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

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PartnerCapitalComponentsAxis=trlc_DividendReinvestmentPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Namespace Prefix:
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Note 6 - Unit Capital (Details Textual) - USD ($)		6 Months Ended		49 Months Ended	111 Months Ended
Note 6 - Unit Capital (Details Textual) - USD ($)	Jun. 11, 2014	Jun. 30, 2026	Jun. 30, 2025	Mar. 31, 2017	Jun. 30, 2026	Dec. 31, 2025
Distribution, Dealer Manager and Service Fees Payable		$ 348,000	$ 362,000		$ 348,000
Units Repurchase, Maximum Percentage of Outstanding Units	5.00%
Units Repurchase, Minimum Period Held (Year)	1 year
Partners' Capital Account, Treasury Units, Purchased		0
Partners' Capital Account, Sale of Units				$ 361,776,000	515,089,000
Private Placement [Member]
Partners' Capital Account, Sale of Units			0		99,753,000
Dividend Reinvestment Plan [Member]
Partners' Capital Account, Sale of Units			$ 0
Capital Unit Class C, Capital Unit Class I and Capital Unit Class W [Member]
Distribution, Dealer Manager and Service Fees Payable		$ 348,000			$ 348,000	$ 362,000
Estimated Net Assets, Value Per Unit (in dollars per share)		$ 5.715			$ 5.715	$ 5.945
Distribution and Dealer Manager Fee Payable, Calculated on Net Asset Value Per Unit, Discount Rate		4.00%			4.00%	4.00%
Capital Unit, Class C [Member]
Distribution Fee, Per Annum, Percentage of Estimated Value Per Share		0.80%			0.80%	0.80%
Capital Unit, Class I [Member]
Dealer Manager Fee, Percentage		0.50%			0.50%	0.50%
Capital Unit, Class W [Member]
Dealer and Service Fees, Percentage		0.75%			0.75%	0.75%