Concentration of Credit Risk (Tables)

9 Months Ended

Apr. 29, 2017

Schedule that Represents A Significant Portion of the Company’s Customer Base and Each Over 10% of Total Revenue

Customers whose combined amounts of trade accounts receivable and costs and estimated earnings in excess of billings, net (“CIEB, net”) exceeded 10% of total combined trade receivables and CIEB, net as of April 29, 2017 or July 30, 2016 were as follows (dollars in millions):



	April 29, 2017			July 30, 2016
	Amount		% of Total	Amount		% of Total
Comcast Corporation	$	172.5	22.4%	$	95.3	13.9%
CenturyLink, Inc.	$	118.4	15.4%	$	79.0	11.5%
AT&T Inc.	$	109.5	14.2%	$	138.8	20.3%
Windstream Corporation	$	89.5	11.6%	$	79.0	11.5%
Verizon Communications Inc.⁽¹⁾	$	63.0	8.2%	$	70.2	10.2%

Customers whose contract revenues exceeded 10% of total contract revenue during the three or nine months ended April 29, 2017 or April 23, 2016 were as follows:



	For the Three Months Ended		For the Nine Months Ended
	April 29, 2017	April 23, 2016	April 29, 2017	April 23, 2016
AT&T Inc.	27.1%	26.8%	28.1%	22.8%
Comcast Corporation	19.4%	14.4%	17.1%	13.3%
CenturyLink, Inc.	17.7%	13.7%	16.6%	14.7%
Verizon Communications Inc.⁽¹⁾	8.5%	10.6%	8.9%	10.7%