Revenue from Contracts with Customers (Tables)

3 Months Ended

Jul. 31, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following tables represents disaggregated revenue for the three months ended July 31, 2020 and 2019:

	Three Months Ended July 31,
	2020		2019
Pharmacology services	$	9,413	$	6,530
Personalized oncology services	113		180
Other	21		27
Total oncology services revenue	$	9,547	$	6,737