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Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2023
Income Taxes [Abstract]  
Schedule of Income (Loss) Before Income Taxes The Company’s income (loss) before income taxes includes the following for the years ended December 31.
   2023   2022   2021 
             
Non-PRC operations  $(176,949)  $(385,297)  $(328,672)
PRC operations   1,771,475    2,254,260    2,540,882 
Total income before income taxes  $1,594,526   $1,868,963   $2,212,210 
Schedule of Income Tax Expense Income tax expense was comprised of the following for the years ended December 31.
   2023   2022   2021 
             
Current tax expense  $207,553   $276,189   $202,229 
Deferred tax expense   339,332    177,029    340,624 
Total income tax expense  $546,885   $453,218   $542,853 
Schedule of Deferred Tax Assets and Liabilities The cumulative tax effect at the expected rate of 25% of significant items comprising the net deferred tax amount is at December 31, 2023 and 2022 as follows.
   2023   2022 
         
Deferred tax assets        
Net operating loss  $8,338   $5,313 
Deferred revenue   39,340    205,605 
Unbilled cost   374,357    355,461 
Unbilled interest expenses   37,727    34,592 
Software amortization   259,965    267,039 
Allowance for doubtful accounts   13,459    8,308 
Inventories obsolescence   (6,591)   7,043 
Unrealized losses on trading securities   1,761    1,809 
Accrued Bonus   43,074    62,441 
Other   34,246    31,819 
Total deferred tax assets   805,676    979,430 
Deferred tax liabilities          
Unbilled revenue   (2,270,234)   (2,149,169)
Unbilled interest income   (50,369)   (69,149)
Deferred government subsidiary income   (41,673)   (42,806)
Unrealized gain on short-term investment   (285)   (2,796)
Other   (14,336)   (4,462)
Total deferred tax liabilities   (2,376,897)   (2,268,382)
Valuation allowance   (32,942)   (11,469)
Net deferred tax liabilities  $(1,604,163)  $(1,300,421)
Schedule of a Reconciliation of Income Tax Expense Following is a reconciliation of income tax expense at the effective rate to income tax at the calculated statutory rates for the years ended December 31.
   2023   2022   2021 
             
PRC statutory tax rate   25%   25.0%   25.0%
Effect of different tax rates in different jurisdictions   2.8%   5.2%   3.7%
Permanent difference   
-
%   (0.1)%   1.1%
Tax holiday effect (1)   6.5%   (5.9)%   (5.3)%
Effective tax rate   34.3%   24.2%   24.5%
(1)A PRC subsidiary incurred loss in 2023, which resulted in tax benefit and positive tax holiday effect in 2023.