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Intangible and Other Non-Current Assets - Aggregate amortization expense for our intangible assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Noncompete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of 2021 $ 298  
2022 519  
2023 446  
2024 380  
2025 373  
Thereafter 499  
Total amortization expense 2,515 $ 2,785
Commissions [Member]    
Finite-Lived Intangible Assets [Line Items]    
Remainder of 2021 424  
2022 609  
2023 553  
2024 490  
2025 424  
Thereafter 884  
Total amortization expense $ 3,384 $ 3,141