Post-effective amendment to a registration statement that is not immediately effective upon filing

Business and summary of significant accounting policies (Concentrations of credit risk) (Details)

v2.4.0.8
Business and summary of significant accounting policies (Concentrations of credit risk) (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Accounts Receivable [Member]
Hotels [Member]
Dec. 31, 2012
Accounts Receivable [Member]
Hotels [Member]
Dec. 31, 2013
Accounts Receivable [Member]
Landlord at Midtown [Member]
Dec. 31, 2012
Accounts Receivable [Member]
Landlord at Midtown [Member]
Concentration Risk [Line Items]              
Concentration Risk, Percentage       66.00% 65.00% 11.00% 6.00%
Allowance for Doubtful Accounts Receivable, Current $ 164,004 $ 164,004           
Cash, Uninsured Amount $ 11,147,927 $ 352,482