Investments in Equipment and Leases, Net (Narrative) (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Investments in Equipment and Leases, Net [Abstract]
Depreciation of operating lease assets	$ 455,000	$ 676,000
Average estimated residual value for assets on operating leases	11.00%	11.00%
Contingent rental revenue	$ 1,500,000	$ 1,800,000

Amount of contingent rental revenue recognized for the period under lease, based on the occurrences of an event or condition.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

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

- Definition

The total depreciation charge recorded for property subject to or held for lease.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

+ Details

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

- Definition

Average Estimated Residual Value for Assets on Operating Leases as Percentage of Original Cost.

+ References

No definition available.

+ Details

Name:	zzhjb_AverageEstimatedResidualValueForAssetsOnOperatingLeasesAsPercentageOfOriginalCost
Namespace Prefix:	zzhjb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	zzhjb_InvestmentsInEquipmentAndLeasesNetAbstract
Namespace Prefix:	zzhjb_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration