Amortization Expense of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense – cost of revenue	$ 10,588	$ 10,060	$ 8,824
Amortization expense – operating expenses	15,857	15,550	12,096
Total amortization expense	$ 26,445	$ 25,610	$ 20,920