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ACQUISITIONS Identifiable Intangible Assets and Estimated Useful Lives (Detail) - USD ($) $ in Thousands | Jan. 01, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |
Goodwill |  | $ 1,108,337 | $ 825,038 | $ 829,073
Freightquote |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash and cash equivalents | $ 29,302 |  |  |
Receivables | 56,228 |  |  |
Other current assets | 2,395 |  |  |
Property and equipment | 43,687 |  |  |
Identifiable intangible assets | 37,800 |  |  |
Goodwill | 287,220 |  |  |
Trademarks | 8,600 |  |  |
Other noncurrent assets | 3,421 |  |  |
Total assets | 468,653 |  |  |
Accounts payable | (44,622) |  |  |
Accrued expenses | (5,485) |  |  |
Other liabilities | (19,939) |  |  |
Net assets acquired | 398,607 |  |  |
Total identifiable intangible assets | $ 37,800 |  |  |
Customer Relationships | Freightquote |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated Life (years) | 5 years |  |  |
Finite-lived intangible assets acquired | $ 37,500 |  |  |
Noncompete Agreements | Freightquote |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated Life (years) | 5 years |  |  |
Finite-lived intangible assets acquired | $ 300 |  |  |

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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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