Annual report pursuant to Section 13 and 15(d)

CUSTOMER CONTRACTS, TRADENAMES AND TRADEMARKS, AND OTHER INTANGIBLE ASSETS (Details)

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CUSTOMER CONTRACTS, TRADENAMES AND TRADEMARKS, AND OTHER INTANGIBLE ASSETS (Details) - Customer Contracts [Member] - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]    
Customer contracts $ 475,494 $ 470,781
Less: accumulated amortization (176,545) (197,061)
Customer contracts, net $ 298,949 $ 273,720