Issuances of Additional Beneficial Certificate Units (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Class of Stock [Line Items]
Common Stock shares, issued	12,650,000		12,650,000
Sale Price of Common Stock per Share	$ 5.06		$ 5.06
Proceeds from Issuance of Common Stock	$ 59,948,265	$ 0	$ 59,948,265
Payments of Stock Issuance Costs	$ 4,000,000