Annual report pursuant to Section 13 and 15(d)

GOODWILL AND INTANGIBLE ASSETS, NET - Expected Amortization Expense (Details)

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GOODWILL AND INTANGIBLE ASSETS, NET - Expected Amortization Expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
2019 $ 1,856  
2020 1,842  
2021 1,837  
2022 1,822  
2023 1,822  
Thereafter 7,413  
Intangible assets subject to amortization, Net 16,592 $ 18,453
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
2019 1,123  
2020 1,123  
2021 1,123  
2022 1,123  
2023 1,123  
Thereafter 6,462  
Intangible assets subject to amortization, Net 12,077 13,201
Non-compete agreements    
Finite-Lived Intangible Assets [Line Items]    
2019 14  
2020 0  
2021 0  
2022 0  
2023 0  
Thereafter 0  
Intangible assets subject to amortization, Net 14 33
Licenses and permits    
Finite-Lived Intangible Assets [Line Items]    
2019 106  
2020 106  
2021 101  
2022 86  
2023 86  
Thereafter 491  
Intangible assets subject to amortization, Net 976 1,081
Developed technology    
Finite-Lived Intangible Assets [Line Items]    
2019 613  
2020 613  
2021 613  
2022 613  
2023 613  
Thereafter 460  
Intangible assets subject to amortization, Net $ 3,525 $ 4,138