Revenue Recognition - Schedule of Deferred Revenues Balance as of Transition Date and Significant Activity Affecting Deferred Revenues (Detail)	3 Months Ended
	Jun. 30, 2021 USD ($)
Change In Contract With Customer Liability [Abstract]
Beginning balance at April 1, 2021	$ 22,514,000
Additions	8,752,000
Revenue recognized from beginning of period	(2,822,000)
Revenue recognized from additions	(6,348,000)
Ending balance at June 30, 2021	$ 22,096,000