General form of registration statement for all companies including face-amount certificate companies

Commitments and contingencies (Operating Leases) (Details)

v2.4.0.8
Commitments and contingencies (Operating Leases) (Details) (USD $)
 9 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Net Amount        
Accounts receivable, net $ 3,046,218 $ 3,393,933 $ 2,294,221  
Operating Lease [Member]
        
Rental Expense        
2013 4,872,205      
2014 5,513,319      
2015 5,440,413      
2016 5,465,932      
2017 4,989,656      
Thereafter 44,658,330      
Total 70,939,855      
Rental Income        
2013 (1,074,012)      
2014 (1,127,152)      
2015 (1,075,083)      
2016 (1,063,784)      
2017 (851,741)      
Thereafter (4,490,707)      
Total (9,682,479)      
Net Amount        
2013 3,798,193      
2014 4,386,167      
2015 4,365,330      
2016 4,402,148      
2017 4,137,915      
Thereafter 40,167,623      
Total 61,257,376      
Landlord contribution towards construction 1,036,900      
Accounts receivable, net 210,458      
Rent expense 2,243,012 3,051,896 4,028,173 2,950,528
Percentage rent 350,938 1,405,577 1,102,699 919,698
Rental income related to subleases $ 339,342 $ 391,983 $ 189,366