Related Party Transactions (Details Textual)	6 Months Ended
Jun. 30, 2013
Related Party Transactions (Additional Textual) [Abstract]
Management Fee, Description	management fees and expenses and operating expenses totaled did not exceed the greater of 2% of our average invested assets and 25% of our net income
Percentage of average invested assets	2.00%
Percentage of net income	25.00%
Percentage Of Management Fee Exceeded Then Invested Assets	2.00%

Description of the nature of payments to managing member or general partner for management of the day-to-day business functions of the limited liability company (LLC) or limited partnership (LP), including the fee rate, basis of calculation, relevant accounting period, whether the fee is paid to an entity other than the managing member or general partner, or whether the fee is waived.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Name:	us-gaap_ManagementFeeDescription
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration