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Long-Term Debt and Financing Obligations Long-term Debt Maturities (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Debt Instrument [Line Items]  
Number of years long-term debt mature after reporting year 5 years
Long-term Debt, Maturities, Repayments of Principal in Year One $ 45,000
Long-term Debt, Maturities, Repayments of Principal in Year Two 0
Long-term Debt, Maturities, Repayments of Principal in Year Three 150,000
Long-term Debt, Maturities, Repayments of Principal in Year Four 0
Long-term Debt, Maturities, Repayments of Principal in Year Five $ 0