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Fair Values - (Available-For-Sale Securities) (Details) - USD ($)
$ in Thousands
1 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2023
Assets and liabilities recorded at fair value    
Purchases $ 4,200  
Unrealized losses recorded in other comprehensive income (loss) (139) $ (139)
Recurring Basis | Significant unobservable inputs (Level 3)    
Assets and liabilities recorded at fair value    
Purchases   4,220
Unrealized losses recorded in other comprehensive income (loss)   (139)
Ending balance $ 4,081 $ 4,081