Summary of Significant Accounting Policies (Narratives) (Details) (Distribution of Net Cash Flow, USD $)	6 Months Ended
Jun. 30, 2013
First Priority
Distribution Made to Member or Limited Partner [Line Items]
Percent per annum of compounded return on capital contributions for member distributions following offering period (percent)	10.00%
Second Priority
Distribution Made to Member or Limited Partner [Line Items]
Maximum distribution of net cash flow (per share)	$ 1,000
Fourth Priority \| Wells Management
Distribution Made to Member or Limited Partner [Line Items]
Percent of distributable proceeds for managing member distributions (percent)	20.00%
Maximum \| First Priority
Distribution Made to Member or Limited Partner [Line Items]
Maximum percent of compounded return on capital contributions for member distributions during offering period (percent)	10.00%
Maximum \| First Priority \| Wells Management
Distribution Made to Member or Limited Partner [Line Items]
Maximum percent of compounded return on capital contributions for managing member distributions (percent)	10.00%
Maximum \| Fourth Priority \| Wells Management
Distribution Made to Member or Limited Partner [Line Items]
Maximum Percent of managing member distributable proceeds available to be repaid to broker/dealers (percent)	50.00%

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Distribution Made to Managing Member, Net Cash Flow, Maximum Percent of Compounded Return on Capital Contributions

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Distribution Made to Managing Member, Percent of Distributable Proceeds

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Distribution Made to Member, Maximum Per Share Distribution of Net Cash Flow

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Distribution Made to Member, Net Cash Flow, Maximum Percent of Compounded Return on Capital Contributions During Offering Period

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Distribution Made to Member, Net Cash Flow, Percent Per Annum of Compounded Return on Capital Contributions Following Offering Period

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Related Party Agreement, Maximum Percent of Managing Member Distributable Proceeds Available To Be Repaid To Broker

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