v3.5.0.2

Preferred Stock (Details) - shares	Jun. 30, 2016	Dec. 31, 2015
Preferred Stock (Textual)
Preferred stock, shares authorized	10,000,000	10,000,000

X

- Definition

The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

X

- References

No definition available.

+ Details

Name:	zetaii_PreferredStockTextualAbstract
Namespace Prefix:	zetaii_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration