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Concentration of Credit Risk | 6 Months Ended
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Jan. 24, 2015
Risks and Uncertainties [Abstract] |
Concentration of Credit Risk | Concentration of Credit Risk The Company’s customer base is highly concentrated, with its top five customers in each period accounting for approximately 59.8% and 58.2% of its total revenues during the six months ended January 24, 2015 and January 25, 2014, respectively. Customers whose revenues exceeded 10% of total revenue during the three or six months ended January 24, 2015 or January 25, 2014 are as follows:
| For the Three Months Ended |  | For the Six Months Ended
| January 24, 2015 |  | January 25, 2014 |  | January 24, 2015 |  | January 25, 2014
AT&T Inc. | 22.0% |  | 18.7% |  | 21.6% |  | 18.0%
CenturyLink, Inc. | 14.0% |  | 14.4% |  | 13.5% |  | 15.0%
Comcast Corporation | 13.1% |  | 12.0% |  | 12.9% |  | 11.2%
Customers representing 10% or more of combined amounts of trade accounts receivable and costs and estimated earnings in excess of billings, net as of January 24, 2015 or July 26, 2014 had the following outstanding balances and the related percentage of the Company’s total outstanding balances:
| January 24, 2015 |  | July 26, 2014
| Amount |  | % of Total |  | Amount |  | % of Total
|  |  | (Dollars in millions) |  |
AT&T Inc. | $ | 84.1 |  |  | 18.1 | % |  | $ | 87.6 |  |  | 17.9 | %
Comcast Corporation | $ | 50.1 |  |  | 10.8 | % |  | $ | 48.9 |  |  | 9.9 | %
CenturyLink, Inc. | $ | 46.7 |  |  | 10.1 | % |  | $ | 48.2 |  |  | 9.8 | %

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- Definition The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6327-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6442-108592 + Details
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