Revenue - Summary of Revenue by Region based on the Shipping Address of Customers (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Revenue		$ 49,999	$ 75,659	$ 110,863	$ 140,172
Service
Disaggregation of Revenue [Line Items]
Revenue	[1]	$ 49,999	$ 75,659	$ 110,863	$ 140,172
Revenue | Geographic Concentration Risk | Service
Disaggregation of Revenue [Line Items]
Percentage of Revenue		100.00%	100.00%	100.00%	100.00%
United States
Disaggregation of Revenue [Line Items]
Revenue		$ 42,185	$ 52,546	$ 85,511	$ 100,655
United States | Revenue | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of Revenue		84.00%	69.00%	77.00%	72.00%
United Kingdom
Disaggregation of Revenue [Line Items]
Revenue		$ 4,163	$ 19,030	$ 18,518	$ 31,004
United Kingdom | Revenue | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of Revenue		8.00%	25.00%	17.00%	22.00%
Canada
Disaggregation of Revenue [Line Items]
Revenue		$ 2,558	$ 2,839	$ 4,728	$ 5,878
Canada | Revenue | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of Revenue		5.00%	4.00%	4.00%	4.00%
Other
Disaggregation of Revenue [Line Items]
Revenue		$ 1,093	$ 1,244	$ 2,106	$ 2,635
Other | Revenue | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of Revenue		3.00%	2.00%	2.00%	2.00%

[1] There was no Therapeutics revenue for the three and six months ended September 30, 2023 and 2022.