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GOODWILL AND OTHER INTANGIBLE ASSETS Estimated amortization expense (Details)
$ in Thousands
Dec. 31, 2017
USD ($)
GOODWILL AND OTHER INTANGIBLES [Abstract]  
2018 $ 91,178
2019 73,995
2020 52,409
2021 40,315
2022 28,468
Thereafter $ 145,259