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ACQUISITIONS (Details) customer in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 USD ($) acquisition customer | Dec. 31, 2016 USD ($) acquisition | Dec. 31, 2015 USD ($)
Business Acquisition [Line Items] |  |  |
Number of acquisitions | acquisition | 23 | 34 |
Cash purchase price for acquisitions | $ 130,200 | $ 46,300 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] |  |  |
Materials and supplies | 14,983 | 13,724 |
Equipment and property, net | 134,088 | 133,477 |
Goodwill | 346,514 | 255,665 | $ 249,939
Customer contracts | 152,869 | 117,466 |
Other intangible assets | 61,548 | 44,310 |
Current liabilities | $ (294,569) | (276,991) |
Northwest Exterminating |  |  |
Business Acquisition [Line Items] |  |  |
Number of customers | customer | 120 |  |
Business acquisitions |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] |  |  |
Accounts receivable, net | $ 3,836 | 3,334 |
Materials and supplies | 312 | 353 |
Equipment and property, net | 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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