Revenue from Contracts with Customers (Tables)

9 Months Ended

Jan. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following tables represents disaggregated revenue for the three and nine months ended January 31, 2019 and 2018:

	Three Months Ended January 31,				Nine Months Ended January 31,
	2019		2018		2019		2018
Pharmacology services	$	5,988	$	4,447	$	18,037	$	13,600
Personalized oncology services	416		259		1,024		1,077
Other	26		376		287		642
Total oncology services revenue	$	6,430	$	5,082	$	19,348	$	15,319