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Acquisitions (Schedule of Consideration Paid and Net Assets Acquired, Business Acquisitions - WesTower) (Details) - USD ($) $ in Thousands | Oct. 01, 2014 | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | --- | ---
Identifiable assets acquired and liabilities assumed: |  |  |
Goodwill |  | $ 1,064,822 | $ 1,082,466
WesTower [Member] |  |  |
Acquisition consideration: |  |  |
Cash | $ 198,000 |  |
Acquisition consideration | 198,000 |  |
Identifiable assets acquired and liabilities assumed: |  |  |
Accounts receivable | 180,600 |  |
Other current assets, including $18.0 million of cash acquired | 50,300 |  |
Business combinations, cash acquired | 18,000 |  |
Property, equipment and other long-term assets, including deferred tax asset | 18,000 |  |
Finite-lived intangible assets | 42,600 |  |
Billings in excess of costs and earnings | (33,300) |  |
Other current liabilities, including current portion of capital lease obligations | (89,800) |  |
Long-term liabilities, including capital lease obligations | (21,100) |  |
Total identifiable net assets | 147,300 |  |
Goodwill | 50,700 |  |
Total net assets acquired, including goodwill | $ 198,000 |  |

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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472 + Details
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