Revenue from Contracts with Customers - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2018
Cumulative effect of new accounting principle in period of adoption			$ 183,120
Lease license to license revenue	50.00%
Amount of revenue recognized from beginning deferred revenue and backlog	$ 475,900	$ 387,200
Gross impact
Cumulative effect of new accounting principle in period of adoption			$ 242,400