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LONG TERM DEBT AND CAPITAL LEASES - Schedule of Future Maturities of Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Debt Disclosure [Abstract]    
2019 $ 2,298  
2020 2,648  
2021 2,175  
2022 1,652  
2023 421,021  
Thereafter 125,455  
Long-term debt and capital lease $ 555,249 $ 497,680