Revenue Recognition (Tables)

9 Months Ended

Apr. 30, 2020

Revenue from Contract with Customer [Abstract]

Schedule of segment revenue and revenue percentage

	Three months ended April 30, 2020				Three months ended April 30, 2019
Revenue category
Third-party payer	$	5,082	52	%	$	5,799	50	%
Medicare		1,870	19			2,634	22
Patient self-pay		1,655	17			1,881	16
HMO’s		1,132	12			1,437	12
Total	$	9,739	100	%	$	12,000	100	%

	Nine months ended April 30, 2020				Nine months ended April 30, 2019
Revenue category
Third-party payer	$	17,878	51	%	$	20,213	53	%
Medicare		8,048	23			7,724	20
Patient self-pay		4,621	13			5,652	15
HMO’s		4,485	13			4,459	12
Total	$	35,032	100	%	$	38,048	100	%

Schedule of product revenue by geographical

	Three Months Ended April 30				Nine Months Ended April 30
	2020		2019		2020		2019
United States	$	3,458	$	4,585	$	11,652	$	12,571
Europe		1,793		2,297		5,740		6,347
Rest of the world		1,166		1,029		3,323		3,283
Products revenue	$	6,417	$	7,911	$	20,715	$	22,201