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Intangible Assets - Amortizable intangible assets (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Amortizable intangible assets    
Gross Carrying Amount $ 3,500 $ 3,500
Accumulated Amortization (2,819) (2,761)
Net $ 681 739
Customer relationships    
Amortizable intangible assets    
Weighted Average Life (Years) 15 years  
Gross Carrying Amount $ 3,500 3,500
Accumulated Amortization (2,819) (2,761)
Net $ 681 $ 739