Composition of Certain Financial Statement Captions - Summary of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Mar. 31, 2023
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid expenses	$ 22,673	$ 26,365
Capitalized commissions costs	14,363	13,813
Accrued interest on marketable securities	916	699
Other current assets	1,732	2,039
Prepaid expenses and other current assets	$ 39,684	$ 42,916