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Long-Term Debt Annual Maturities (Details)
$ in Thousands
Dec. 31, 2020
USD ($)
Long Term Debt Annual Maturities [Abstract]  
Long-term Debt, Maturities, Repayments of Principal in Next Rolling Twelve Months $ 13,600
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Two 17,100
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Three 20,600
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Four 17,600
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Five 24,600
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five 429,500
Total Future Repayments $ 523,000