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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
 1 Months Ended 3 Months Ended 6 Months Ended
Jan. 31, 2014
Jun. 30, 2014
Office
Mar. 31, 2014
Jun. 30, 2013
Mar. 31, 2013
Jun. 30, 2014
Office
Jun. 30, 2013
Dec. 31, 2013
Mar. 19, 2013
Feb. 09, 2013
Significant Accounting Policies [Line Items]                    
Percentage of revenues and operating costs generated in foreign operations           99.60% 99.60%      
Long-lived assets and goodwill located in the foreign operations   $ 167,538,600       $ 167,538,600   $ 183,922,432    
Exchange rate used to re-measure transactions 8.00 8.13       8.13   6.52 6.30 6.30
Foreign currency loss         6,400,000          
Foreign exchange loss   16,500,000                
Number of office spaces owned   2       2        
Fair value of real estate properties   22,000,000       22,000,000        
Impairment of Long lived assets   49,495,686       49,495,686        
Percentage of increase in exchange ratio 23.00%                  
Net assets decreased     14,625,451              
Recognize foreign currency gain     4,597,510              
Percentage on relief of total income tax           60.00%        
Percentage of tax benefits obtained from software development law           From fiscal year 2008, the Company's Argentine subsidiary has been a beneficiary of a software development law. Part of the benefits obtained from being a beneficiary of the aforementioned law is a relief of 60% of total income tax determined in each year, thus resulting in an effective tax rate in Argentina lower than the income tax law statutory rate. The law expires in September of 2014. As a consequence, the average tax rate for 2014 would be approximately 22% as we expect no income tax holiday during last quarter of fiscal year 2014.        
Effective tax rate           22.00%        
Aggregate tax benefit, total   1,496,827   2,275,176   3,599,169 4,769,024      
Aggregate per share effect of the Argentine tax holiday   $ 0.03   $ 0.05   $ 0.08 $ 0.11      
Debt indenture description           The Indenture contains customary terms and covenants, including that upon certain events of default occurring and continuing, either the Trustee or the holders of at least 25% in principal amount of the outstanding Notes may declare 100% of the principal of, and accrued and unpaid interest on, all the Notes to be due and payable.        
Debt discount   0       0        
Net of deferred income tax effect amounts           (8,672,289) (1,815,001)      
Capped Call Transactions [Member]
                    
Significant Accounting Policies [Line Items]                    
Strike price, per share           $ 126.02        
Approximate cap price, per share   $ 155.81       $ 155.81        
2.25% Convertible Senior Notes Due 2019 [Member]
                    
Significant Accounting Policies [Line Items]                    
Convertible senior notes, issued   330,000,000       330,000,000        
Convertible senior notes, interest rate   2.25%       2.25%        
Convertible senior notes, conversion rate           7.9353%        
Convertible senior notes, conversion price   $ 126.02       $ 126.02        
Convertible senior notes, principal amount per share           1,000        
Net carrying amount   283,015,125       283,015,125        
Cash flows, discount rate           5.55%        
Debt discount   46,984,875       46,984,875        
Effective interest rate   6.10%       6.10%        
2.25% Convertible Senior Notes Due 2019 [Member] | Capped Call Transactions [Member]
                    
Significant Accounting Policies [Line Items]                    
Payment for capped call transactions           19,668,000        
Net of deferred income tax effect amounts           $ 12,784,200        
SICAD 2 [Member]
                    
Significant Accounting Policies [Line Items]                    
Foreign exchange rate   49.98       49.98        
Foreign exchange rate, average   17.82                
Venezuelan Subsidiaries [Member]
                    
Significant Accounting Policies [Line Items]                    
Percentage of consolidated net assets   7.00%       7.00%        
Percentage of consolidated cash and investments   1.60%       1.60%