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Derivative Financial Instruments (Summary of Interest Rate Swaps) (Details)
$ in Millions
12 Months Ended
Dec. 31, 2021
USD ($)
November 2018 to November 2023 [Member]  
Derivative [Line Items]  
Trade Date Nov. 28, 2018
Notional Amount $ 200.0
Coverage Period November 2018 to November 2023
Risk Coverage USD-LIBOR
March 2021 to March 2025 [Member]  
Derivative [Line Items]  
Trade Date Nov. 28, 2018
Notional Amount $ 100.0
Coverage Period March 2021 to March 2025
Risk Coverage USD-LIBOR
March 2020 to March 2022 [Member]  
Derivative [Line Items]  
Trade Date Mar. 06, 2020
Notional Amount $ 50.0
Coverage Period March 2020 to March 2022
Risk Coverage USD-LIBOR
March 2021 to March 2024 [Member]  
Derivative [Line Items]  
Trade Date Mar. 10, 2020
Notional Amount $ 50.0
Coverage Period March 2021 to March 2024
Risk Coverage USD-LIBOR
March 2021 to March 2024 [Member]  
Derivative [Line Items]  
Trade Date Mar. 11, 2020
Notional Amount $ 50.0
Coverage Period March 2021 to March 2024
Risk Coverage USD-LIBOR