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Long-term Debt - Debt Table (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Debt Instrument [Line Items] |  |
Debt issuance costs | $ (4,160) | $ (5,310)
Long-term debt, net | 346,290 | 294,690
Senior Notes [Member] |  |
Debt Instrument [Line Items] |  |
Debt | 300,000 | 300,000
Credit Agreement [Member] |  |
Debt Instrument [Line Items] |  |
Debt | $ 50,450 | $ 0

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