Balance Sheet Detail - Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accrued Liabilities Current [Abstract]
Accrued bonus	$ 40,853	$ 29,518
Accrued partner commissions	13,088	9,173
Accrued payroll and related taxes	10,208	7,903
Employee stock purchase plan contributions	7,113	5,927
Accrued sales commissions	7,007	5,563
Contract liabilities	6,918	10,134	$ 5,197
Accrued federal, state, local, and foreign taxes	3,926	4,338
Self-insurance reserves	2,401	1,563
Accrued interest payable	944	0
Other	17,334	10,413
Total	$ 109,792	$ 84,532