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Debt Financing and Revolving Credit Facilities (Estimated Annual Maturities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Debt Financing and Revolving Credit Facilities [Abstract]    
2022 $ 0  
2023 31,943  
2024 0  
2025 57,278  
2026 0  
Thereafter 0  
Total Debt $ 89,221 $ 66,979