Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property Plant And Equipment [Line Items]
Total property and equipment at cost	$ 95,419	$ 47,052
Less: accumulated depreciation	(42,510)	(30,711)
Total property and equipment, net	52,909	16,341
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property and equipment at cost	12,085	10,404
Computer Equipment and Related Software
Property Plant And Equipment [Line Items]
Total property and equipment at cost	53,252	22,200
Furniture and Office Equipment
Property Plant And Equipment [Line Items]
Total property and equipment at cost	6,676	8,053
Equipment
Property Plant And Equipment [Line Items]
Total property and equipment at cost	8,618
Capital Projects in Process
Property Plant And Equipment [Line Items]
Total property and equipment at cost	$ 14,788	$ 6,395