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ACQUISITIONS (Tables) | 12 Months Ended
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Dec. 31, 2017
Business Combinations [Abstract] |
Schedule of assets acquired and liabilities | The fair values of major classes of assets acquired and liabilities assumed along with the contingent consideration liability recorded during the valuation period of acquisition is included in the reconciliation of the total consideration as follows (in thousands):
December 31, | 2017 |  | 2016
Accounts receivable, net | $ | 3,836 |  |  | $ | 3,334 |
Materials and supplies | 312 |  |  | 353 |
Equipment and property | 3,027 |  |  | 4,525 |
Goodwill | 87,261 |  |  | 6,468 |
Customer contracts | 60,695 |  |  | 49,365 |
Other intangible assets | 20,086 |  |  | 1,285 |
Current liabilities | (30,344 | ) |  | (10,809 | )
Other assets and liabilities, net | 1,209 |  |  | (594 | )
Total consideration paid | 146,082 |  |  | 53,927 |
Less: Contingent consideration liability | (15,893 | ) |  | (7,619 | )
Total cash purchase price | $ | 130,189 |  |  | $ | 46,308 |

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- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1486-128463 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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