Concentration of Credit Risk (Tables)

3 Months Ended

Apr. 27, 2019

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 contract assets, net exceeded 10% of total combined accounts receivable and contract assets, net as of April 27, 2019 or January 26, 2019 were as follows (dollars in millions):



	April 27, 2019			January 26, 2019
	Amount		% of Total	Amount		% of Total
Verizon Communications Inc.	$	390.3	39.6%	$	298.4	36.2%
CenturyLink, Inc.	$	152.7	15.5%	$	147.2	17.9%
Comcast Corporation	$	131.1	13.3%	$	127.2	15.4%
AT&T Inc.	$	114.3	11.6%	$	90.6	11.0%

Total contract revenues by customer type during the three months ended April 27, 2019 and April 28, 2018 were as follows (dollars in millions):



	For the Three Months Ended
	April 27, 2019			April 28, 2018
	Amount		% of Total	Amount		% of Total
Telecommunications	$	761.4	91.3%	$	667.2	91.2%
Underground facility locating	48.2		5.8	45.1		6.2
Electrical and gas utilities and other	24.1		2.9	19.1		2.6
Total contract revenues	$	833.7	100.0%	$	731.4	100.0%

Customers whose contract revenues exceeded 10% of total contract revenues during the three months ended April 27, 2019 or April 28, 2018, as well as total contract revenues from all other customers combined, were as follows (dollars in millions):



	For the Three Months Ended
	April 27, 2019			April 28, 2018
	Amount		% of Total	Amount		% of Total
AT&T Inc.	$	209.3	25.1%	$	177.0	24.2%
Verizon Communications Inc.	179.8		21.6	122.1		16.7
Comcast Corporation	137.1		16.4	159.2		21.8
CenturyLink, Inc.	109.8		13.2	89.7		12.3
Total other customers combined	197.7		23.7	183.4		25.0
Total contract revenues	$	833.7	100.0%	$	731.4	100.0%