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Pension Plan - Plan Assets at Fair Value (Details) - Pension Plan - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value $ 9,283 $ 11,591 $ 7,096
Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 8,912 11,591  
Level I | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 7,705 8,230  
Level II | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 0 0  
Level III | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 1,207 3,361  
Net Asset Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 371    
Cash | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 650 348  
Cash | Level I | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 650 348  
Cash | Level II | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 0 0  
Cash | Level III | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 0 0  
Fixed income | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 2,599 2,898  
Fixed income | Level I | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 2,599 2,898  
Fixed income | Level II | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 0 0  
Fixed income | Level III | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 0 0  
Alternative investments | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 1,207 3,361  
Alternative investments | Level I | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 0 0  
Alternative investments | Level II | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 0 0  
Alternative investments | Level III | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 1,207 3,361  
Domestic equities | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 2,414 2,898  
Domestic equities | Level I | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 2,414 2,898  
Domestic equities | Level II | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 0 0  
Domestic equities | Level III | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 0 0  
Foreign equities | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 2,042 2,086  
Foreign equities | Level I | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 2,042 2,086  
Foreign equities | Level II | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value 0 0  
Foreign equities | Level III | Estimated Fair Value      
Plan's assets at fair value by level, within the fair value hierarchy      
Total assets at fair value $ 0 $ 0