Name:	ck0001448038_AdministrativeFeesPercentage
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Data Type:	num:percentItemType
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Period Type:	instant

Estimated maximum percentage of brokerage commissions collected by RMC on loans brokered for the company during any given year.

No definition available.

Name:	ck0001448038_LoanBrokerageCommissionPercentMaximum
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Estimated minimum percentage of brokerage commissions collected by RMC on loans brokered for the company during any given year.

No definition available.

Name:	ck0001448038_LoanBrokerageCommissionPercentMinimum
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Data Type:	num:percentItemType
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Period Type:	instant

Maximum percentage of loan brokerage commissions RMC is allowed to collect from borrowers in comparison to total company assets.

No definition available.

Name:	ck0001448038_LoanBrokerageCommissionsMaximumPercentOfAssets
Namespace Prefix:	ck0001448038_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Annual percentage of the capital originally committed to investment in mortgages, less leverage, plus up to 2 percent of working capital reserves, paid to a manager by the company each month for managing the company's portfolio and operations.

No definition available.

Name:	ck0001448038_ManagementFeePercentage
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Managers and other related parties details.

No definition available.

Name:	ck0001448038_ManagersAndOtherRelatedPartiesDetailsLineItems
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The percentage of company profits or losses allocated to the company's managers before any allocations to the limited members.

No definition available.

Name:	ck0001448038_ManagersShareOfProfitsOrLosses
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Mortgage servicing fees.

No definition available.

Name:	ck0001448038_MortgageServicingFees
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Percentage of original purchase price quarterly installment percentage.

No definition available.

Name:	ck0001448038_PercentageOfOriginalPurchasePriceQuarterlyInstallmentPercentage
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Percentage reimbursed.

No definition available.

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Period Type:	duration

Period for reimbursement.

No definition available.

Name:	ck0001448038_PeriodForReimbursement
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Reimbursement as a percentage of members original purchase price.

No definition available.

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Namespace Prefix:	ck0001448038_
Data Type:	num:percentItemType
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Period Type:	duration

Maximum percentage of working capital.

No definition available.

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Data Type:	num:percentItemType
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Period Type:	instant

The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(c))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Indicates the number of mortgages under each classification.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.3)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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Data Type:	xbrli:integerItemType
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Period Type:	duration

Aggregate amount of net income allocated to general partners.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of transactions with related party during the financial reporting period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864