Note 2 - Summary of Significant Accounting Policies (Details)	3 Months Ended
Mar. 31, 2015
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	72.50%
Estimating Real Property Value, Number of Approaches	3
Cash and Cash Equivalents, Maximum Initial Maturity	3 months
Interest Reserve Minimum Length	1 year
Interest Reserve Maximum Length	2 years
Maximum [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Residential Lease Term	1 year

Length in months of maturity of financial instruments the company considers as a cash equivalent.

No definition available.

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The number of approaches a commercial real estate appraiser will present in their appraisal

No definition available.

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The typical maximum length in years of an interest reserve established at the inception of a loan.

No definition available.

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Namespace Prefix:	rmiviii_
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The typical minimum length in years of an interest reserve established at the inception of a loan.

No definition available.

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Residential lease term.

No definition available.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

No definition available.

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

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