Summary of Significant Accounting Policies, Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accrued Expenses [Abstract]
Accrued sales force commissions and other payments	$ 149,481	$ 103,532
Accrued income taxes	13,921	0
Accrued other taxes	45,018	29,657
Accrued payroll and other employee expenses	65,272	30,610
Accrued payable to vendors	47,201	34,760
Short-term operating lease liability	44,981	39,349
Accrued royalties	1,008	514
Sales return reserve	3,978	3,903
Deferred revenue	35,054	20,162
Other	40,768	27,794
Total accrued expenses	$ 446,682	$ 290,281
Short-term operating lease liability, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent