Base percentage of aggregate capital accounts for required contribution.

No definition available.

Name:	rmiix_BasePercentageOfAggregateCapitalAccountsForRequiredContribution
Namespace Prefix:	rmiix_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of years for the repayment of the Formation Loan by RMC

+ References

No definition available.

+ Details

Name:	rmiix_FormationLoanDuration
Namespace Prefix:	rmiix_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Formation loan number of payments.

+ References

No definition available.

+ Details

Name:	rmiix_FormationLoanNumberOfPayments
Namespace Prefix:	rmiix_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum capital units for redemption per quarter per individual.

+ References

No definition available.

+ Details

Name:	rmiix_MaximumCapitalUnitsForRedemptionPerQuarterPerIndividual
Namespace Prefix:	rmiix_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum percentage of members outstanding units for redemption per quarter per individual.

+ References

No definition available.

+ Details

Name:	rmiix_MaximumPercentageOfMembersOutstandingUnitsForRedemptionPerQuarterPerIndividual
Namespace Prefix:	rmiix_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum percentage of weighted average number of members outstanding units during twelve months.

+ References

No definition available.

+ Details

Name:	rmiix_MaximumPercentageOfWeightedAverageNumberOfMembersOutstandingUnitsDuringTwelveMonthsForRedemption
Namespace Prefix:	rmiix_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	rmiix_Note1OrganizationandGeneralDetailsLineItems
Namespace Prefix:	rmiix_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Redemption value percentage of purchase price or capital account balance.

+ References

No definition available.

+ Details

Name:	rmiix_RedemptionValuePercentageOfPurchasePriceOrCapitalAccountBalance
Namespace Prefix:	rmiix_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Required holding period by the investor before redemption is allowed

+ References

No definition available.

+ Details

Name:	rmiix_UnitRedemptionProgramYearsAfterPurchase
Namespace Prefix:	rmiix_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of authorized capital units or capital shares. This element is relevant to issuers of face-amount certificates and registered investment companies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.6-04.16(a))

-URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996

+ Details

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

- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of state and local current and deferred income tax expense (benefit) attributable to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 6.I.7)

-URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 9

-Subparagraph (a)-(b)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

+ Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=rmiix_FormationLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_StatementScenarioAxis=rmiix_RedemptionAfterFiveYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=rmiix_RedemptionBetweenFourToFiveYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=rmiix_RedemptionBetweenOneToTwoYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=rmiix_RedemptionBetweenThreeToFourYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=rmiix_RedemptionBetweenTwoToThreeYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 1 - Organization and General (Details) (USD $)	3 Months Ended
Note 1 - Organization and General (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2012
Note 1 - Organization and General (Details) [Line Items]
Capital Units, Authorized (in Shares)			150,000,000us-gaap_CapitalUnitsAuthorized
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	1.00%	1.00%
State and Local Income Tax Expense (Benefit), Continuing Operations (in Dollars)	$ 800
Unit Redemption Program, Years After Purchase	1
Maximum Capital Units for Redemption Per Quarter Per Individual (in Dollars)	$ 100,000
Maximum Percentage of Members Outstanding Units for RedemptionPerQuarterPerIndividual	25.00%
Maximum Percentage of Weighted Average Number of Members Outstanding Units During Twelve Months for Redemption	5.00%
Base Percentage of Aggregate Capital Accounts for Required Contribution	1.00%
Distribution Reinvestment Plan [Member]
Note 1 - Organization and General (Details) [Line Items]
Capital Units, Authorized (in Shares)			37,500,000
Redemption Between One to Two Years [Member]
Note 1 - Organization and General (Details) [Line Items]
Redemption Value Percentage of Purchase Price or Capital Account Balance	92.00%
Redemption Between Two to Three Years [Member]
Note 1 - Organization and General (Details) [Line Items]
Redemption Value Percentage of Purchase Price or Capital Account Balance	94.00%
Redemption Between Three to Four Years [Member]
Note 1 - Organization and General (Details) [Line Items]
Redemption Value Percentage of Purchase Price or Capital Account Balance	96.00%
Redemption Between Four to Five Years [Member]
Note 1 - Organization and General (Details) [Line Items]
Redemption Value Percentage of Purchase Price or Capital Account Balance	98.00%
Redemption After Five Years [Member]
Note 1 - Organization and General (Details) [Line Items]
Redemption Value Percentage of Purchase Price or Capital Account Balance	100.00%
Formation Loan [Member]
Note 1 - Organization and General (Details) [Line Items]
Formation Loan Duration	10 years
Formation Loan Number of Payments	10