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Schedule of Capital Lease Obligations (Detail) - USD ($)
6 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Operating Leased Assets [Line Items]    
Capital Leases Obligations: $ 32,444,759 $ 33,609,661
Less: Current portion of capital leases (4,071,318) (4,478,968)
Capital leases obligations 28,373,441 29,130,693
Building    
Operating Leased Assets [Line Items]    
Capital Leases Obligations: 24,168,540 24,424,341
Equipment    
Operating Leased Assets [Line Items]    
Capital Leases Obligations: $ 8,276,219 $ 9,185,320
Capital Lease Obligations | Building    
Operating Leased Assets [Line Items]    
Debt instrument, effective interest rate [1] 7.50%  
Debt instrument maturity date 2036-07  
Capital Lease Obligations | Minimum    
Operating Leased Assets [Line Items]    
Debt instrument, effective interest rate 5.10%  
Capital Lease Obligations | Minimum | Equipment    
Operating Leased Assets [Line Items]    
Debt instrument, effective interest rate [1] 5.60%  
Debt instrument maturity date 2017-03  
Capital Lease Obligations | Maximum    
Operating Leased Assets [Line Items]    
Debt instrument, effective interest rate 9.10%  
Capital Lease Obligations | Maximum | Equipment    
Operating Leased Assets [Line Items]    
Debt instrument, effective interest rate [1] 9.00%  
Debt instrument maturity date 2020-12  
[1] Effective rate as of June 30, 2016