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Other Intangible, Net and Goodwill (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]          
Finite-Lived Intangible Assets, Amortization Expense $ 600 $ 600 $ 1,800 $ 1,800  
Finite-Lived Intangible Assets [Line Items]          
Finite-lived Intangible Assets Acquired 0   0    
Carrying amount of goodwill 168,295   168,295   $ 168,295
Gross Amount 41,200   41,200    
Accumulated Amortization 18,247   18,247    
Net Intangible Assets 22,953   22,953    
Customer Relationships [Member]          
Finite-Lived Intangible Assets [Line Items]          
Gross Amount 23,000   23,000    
Accumulated Amortization 5,514   5,514    
Net Intangible Assets 17,486   17,486    
Tradename          
Finite-Lived Intangible Assets [Line Items]          
Gross Amount 12,900   12,900    
Accumulated Amortization 9,100   9,100    
Net Intangible Assets 3,800   3,800    
Covenants Not to Compete          
Finite-Lived Intangible Assets [Line Items]          
Gross Amount 5,300   5,300    
Accumulated Amortization 3,633   3,633    
Net Intangible Assets $ 1,667   $ 1,667    
Maximum [Member] | Customer Relationships [Member]          
Finite-Lived Intangible Assets [Line Items]          
Amortization period (years)     20 years    
Maximum [Member] | Tradename          
Finite-Lived Intangible Assets [Line Items]          
Amortization period (years)     6 years    
Maximum [Member] | Covenants Not to Compete          
Finite-Lived Intangible Assets [Line Items]          
Amortization period (years)     10 years    
Minimum [Member] | Customer Relationships [Member]          
Finite-Lived Intangible Assets [Line Items]          
Amortization period (years)     15 years    
Minimum [Member] | Tradename          
Finite-Lived Intangible Assets [Line Items]          
Amortization period (years)     6 months    
Minimum [Member] | Covenants Not to Compete          
Finite-Lived Intangible Assets [Line Items]          
Amortization period (years)     1 year