Revenue - Schedule of Revenue by Category (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Amount	$ 44,071,000	$ 49,999,000	$ 84,485,000	$ 110,863,000
% of Revenue			100.00%	100.00%
Personal genome service (“PGS”)
Disaggregation of Revenue [Line Items]
Amount	37,167,000	39,602,000	$ 69,673,000	$ 76,631,000
Personal genome service (“PGS”) | Point in Time
Disaggregation of Revenue [Line Items]
Amount	27,652,000	34,202,000	52,049,000	65,961,000
Personal genome service (“PGS”) | Over Time
Disaggregation of Revenue [Line Items]
Amount	9,515,000	5,400,000	17,624,000	10,670,000
Telehealth
Disaggregation of Revenue [Line Items]
Amount	6,423,000	9,056,000	13,070,000	19,580,000
Telehealth | Point in Time
Disaggregation of Revenue [Line Items]
Amount	4,890,000	6,872,000	9,929,000	15,157,000
Telehealth | Over Time
Disaggregation of Revenue [Line Items]
Amount	1,533,000	2,184,000	3,141,000	4,423,000
Consumer services
Disaggregation of Revenue [Line Items]
Amount	43,590,000	48,658,000	82,743,000	96,211,000
Consumer services | Point in Time
Disaggregation of Revenue [Line Items]
Amount	32,542,000	41,074,000	61,978,000	81,118,000
Consumer services | Over Time
Disaggregation of Revenue [Line Items]
Amount	11,048,000	7,584,000	20,765,000	15,093,000
Research services
Disaggregation of Revenue [Line Items]
Amount	481,000	1,341,000	1,742,000	14,652,000
Research services | Point in Time
Disaggregation of Revenue [Line Items]
Amount	0	0	344,000	2,353,000
Research services | Over Time
Disaggregation of Revenue [Line Items]
Amount	481,000	1,341,000	1,398,000	12,299,000
Service
Disaggregation of Revenue [Line Items]
Amount	38,514,000	42,766,000	73,193,000	96,026,000
Service | Point in Time
Disaggregation of Revenue [Line Items]
Amount	32,542,000	41,074,000	62,322,000	83,471,000
Service | Over Time
Disaggregation of Revenue [Line Items]
Amount	11,529,000	8,925,000	22,163,000	27,392,000
Therapeutics
Disaggregation of Revenue [Line Items]
Amount	$ 0	$ 0	$ 0	$ 0
Product Concentration Risk | Revenue
Disaggregation of Revenue [Line Items]
% of Revenue	100.00%	100.00%	100.00%	100.00%
Product Concentration Risk | Revenue | Personal genome service (“PGS”)
Disaggregation of Revenue [Line Items]
% of Revenue	84.00%	79.00%	82.00%	69.00%
Product Concentration Risk | Revenue | Personal genome service (“PGS”) | Point in Time
Disaggregation of Revenue [Line Items]
% of Revenue	63.00%	68.00%	62.00%	59.00%
Product Concentration Risk | Revenue | Personal genome service (“PGS”) | Over Time
Disaggregation of Revenue [Line Items]
% of Revenue	22.00%	11.00%	20.00%	10.00%
Product Concentration Risk | Revenue | Telehealth
Disaggregation of Revenue [Line Items]
% of Revenue	15.00%	18.00%	16.00%	18.00%
Product Concentration Risk | Revenue | Telehealth | Point in Time
Disaggregation of Revenue [Line Items]
% of Revenue	11.00%	14.00%	12.00%	14.00%
Product Concentration Risk | Revenue | Telehealth | Over Time
Disaggregation of Revenue [Line Items]
% of Revenue	3.00%	4.00%	4.00%	4.00%
Product Concentration Risk | Revenue | Consumer services
Disaggregation of Revenue [Line Items]
% of Revenue	99.00%	97.00%	98.00%	87.00%
Product Concentration Risk | Revenue | Consumer services | Point in Time
Disaggregation of Revenue [Line Items]
% of Revenue	74.00%	82.00%	74.00%	73.00%
Product Concentration Risk | Revenue | Consumer services | Over Time
Disaggregation of Revenue [Line Items]
% of Revenue	25.00%	15.00%	24.00%	14.00%
Product Concentration Risk | Revenue | Research services
Disaggregation of Revenue [Line Items]
% of Revenue	1.00%	3.00%	2.00%	13.00%
Product Concentration Risk | Revenue | Research services | Point in Time
Disaggregation of Revenue [Line Items]
% of Revenue	0.00%	0.00%	0.00%	2.00%
Product Concentration Risk | Revenue | Research services | Over Time
Disaggregation of Revenue [Line Items]
% of Revenue	1.00%	3.00%	2.00%	11.00%
Product Concentration Risk | Revenue | Service | Point in Time
Disaggregation of Revenue [Line Items]
% of Revenue	74.00%	82.00%	74.00%	75.00%
Product Concentration Risk | Revenue | Service | Over Time
Disaggregation of Revenue [Line Items]
% of Revenue	26.00%	18.00%	26.00%	25.00%