Equity Incentive Plans and Stock-Based Compensation - Schedule of Share Based Compensation Expense (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($) reportable_segment	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($) reportable_segment
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	$ 9,244	$ 24,100	$ 47,725	$ 91,335
Share-based payment arrangement, plan modification, incremental cost	2,100		2,100
Former Lemonaid Officer
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Number of former employees | reportable_segment		2		2
Secondary Sale Transaction | Cost of revenue | Service
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	365	$ 788	2,242	$ 4,066
Secondary Sale Transaction | Cost of revenue | Product
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	216	287	1,074	1,228
Secondary Sale Transaction | Research and development
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	2,362	4,805	19,490	19,172
Secondary Sale Transaction | Sales and marketing
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	561	1,145	5,240	5,048
Secondary Sale Transaction | General and administrative
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	3,663	17,075	17,566	61,191
Secondary Sale Transaction | General and administrative | Former Lemonaid Officer
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense		10,800		32,800
Secondary Sale Transaction | Restructuring and other charges(2)
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	$ 2,077	$ 0	$ 2,113	$ 630