CONSOLIDATED STATEMENTS OF CASH FLOWS [Parenthetical] (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Distributions paid to common stockholders,declared but not yet reinvested	$ 49,556	$ 24,728

The aggregate amount of dividends declared, but not paid, as of the financial reporting date.

No definition available.

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Namespace Prefix:	cik0001442626_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration