v3.7.0.1

Organization and Basis of Accounting - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of Limited Partnership Units sold	50,476.17
Number of Limited Partnership Units initially offered	30,000
Number of Limited Partnership Units offering limitation	60,000	60,000
Limited partners units, value	$ 1,000	$ 1,000
Gross offering proceeds	$ 50,476,170
Number of Limited Partnership Units repurchased	408.65
Payments for repurchase of Limited Partnership Units	$ 383,822
Capital contribution	500	$ 500
Federal Deposit Insurance Corporation insurance coverage	$ 250,000

Federal deposit insurance corporation insurance coverage.

+ References

No definition available.

+ Details

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Namespace Prefix:	ck0000853496_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Gross proceeds from sale of limited partnership units.

+ References

No definition available.

+ Details

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Namespace Prefix:	ck0000853496_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Limited partners capital account units initially authorized.

+ References

No definition available.

+ Details

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Namespace Prefix:	ck0000853496_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Limited partners unit value

+ References

No definition available.

+ Details

Name:	ck0000853496_LimitedPartnersUnitValue
Namespace Prefix:	ck0000853496_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of capital contributed by the general partner.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055

Reference 2: 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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Name:	us-gaap_GeneralPartnersContributedCapital
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The number of limited partner units authorized to be issued.

+ References

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055

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

- Definition

The number of limited partner units issued.

+ References

+ Details

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

- References

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6828210&loc=d3e70191-108054

+ Details

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

- Definition

Units that were previously issued and have been repurchased during the year.

+ References

+ Details

Name:	us-gaap_PartnersCapitalAccountUnitsTreasury
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

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