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Derivative Financial Instruments (Narrative) (Details)
$ in Thousands
1 Months Ended 3 Months Ended
Mar. 31, 2016
USD ($)
contract
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Derivative [Line Items]      
Cash flow hedge ineffectiveness   $ 200  
Interest Rate Swap Agreements [Member]      
Derivative [Line Items]      
Interest rate swap notional amount $ 30,000 20,000  
Number of interest rate swap contracts | contract 4    
Fair value of interest rate swap contracts   400 $ (500)
Increase in fair value of derivatives   $ 800