Revenue from Contracts with Customers (Tables)

6 Months Ended

Oct. 31, 2021

Revenue from Contract with Customer [Abstract]

Summary of disaggregation of revenue

The following tables represents disaggregated revenue for the three and six months ended October 31, 2021 and 2020:

	Three Months Ended October 31,				Six Months Ended October 31,
	2021		2020		2021		2020
Pharmacology services	$	11,143	$	10,041	$	21,846	$	19,454
Other TOS revenue	643		39		1,169		60
Personalized oncology services	—		37		24		150
Total oncology services revenue	$	11,786	$	10,117	$	23,039	$	19,664