Annual report pursuant to Section 13 and 15(d)

Commitments and contingencies - Operating leases (Details)

v3.3.1.900
Commitments and contingencies - Operating leases (Details) - Operating Lease [Member] - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Expense    
2016 $ 7,999,422  
2017 7,846,622  
2018 7,949,554  
2019 8,060,658  
2020 8,314,713  
Thereafter 100,509,775  
Total 140,680,744  
Income    
2016 (929,736)  
2017 (691,015)  
2018 (690,980)  
2019 (706,235)  
2020 (675,768)  
Thereafter (121,656)  
Total (3,815,390)  
Net Amount    
2016 7,069,686  
2017 7,155,607  
2018 7,258,574  
2019 7,354,423  
2020 7,638,945  
Thereafter 100,388,119  
Total 136,865,354  
Percentage rent 369,126 $ 433,194
Rent expense 4,909,851 3,432,364
Rental income related to subleases $ 795,895 $ 517,155