Software Development Costs Schedule of Capitalized Software, Future Amortization Expense (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Research and Development [Abstract]
Capitalized Computer Software, Amortization Expense, Next Twelve Months	$ 276,532
Capitalized Computer Software, Amortization Expense, Year Two	245,911
Capitalized Computer Software, Amortization Expense, Year Three	194,007
Capitalized Computer Software, Amortization Expense, Year Four	147,349
Capitalized Computer Software, Amortization Expense, Year Five	$ 95,431