Accounts receivable, net (Tables)

9 Months Ended

Apr. 30, 2018

Percentage of Net Product and Engineering Revenue from Major Customers

Set forth in the table below are customers that individually accounted for 10% or more of our net revenue.

	Three Months Ended						Nine Months Ended
	April 30,						April 30,
	2018			2017			2018			2017
Koninklijke Philips Electronics N.V., or Philips		14	%		14	%		13	%		14	%
Siemens AG		10	%		11	%		11	%		12	%
L-3 Communications Corporation, or L-3	*				11	%	*				10	%

Note (*): Total net revenue was less than 10% in this period.

Summary of Net Accounts Receivable Due from Customers With Net Accounts Receivable Balance Greater than or Equal to 10% of Net Account Receivable Balance

The following table summarizes our customers with net accounts receivable balances greater than or equal to 10% of our total net accounts receivable balance:

	As of			As of
	April 30,			July 31,
	2018			2017
Philips		17	%		14	%
L-3 Communications Corporation, or L-3		11	%	*
GE	*				11	%

Note (*): Total net accounts receivable balance was less than 10% in this period.