Common Stock and Stockholders' Equity - Summary of Stock-Based Compensation Expense (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 39,852,000	$ 37,571,000	$ 74,734,000	$ 79,758,000
Restructuring charges	7,200,000		7,210,000	12,763,000
Stock-based compensation
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Restructuring charges			0	493,000
Executive officer
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Acceleration of share-based payment expense			0	9,600,000
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	1,533,000	1,303,000	2,877,000	2,375,000
Restructuring charges			407,000	0
Cost of revenue | Stock-based compensation
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Restructuring charges				0
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	14,442,000	12,147,000	27,728,000	23,111,000
Restructuring charges			1,435,000	0
Research and development | Stock-based compensation
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Restructuring charges				0
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	12,874,000	13,548,000	23,457,000	25,082,000
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 11,003,000	$ 10,573,000	20,672,000	29,190,000
Restructuring charges			$ 1,610,000	1,291,000
General and administrative | Stock-based compensation
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Restructuring charges				$ 87,000