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Debt and Credit Agreements - Schedule of Long Term Debt (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Line of Credit Facility [Line Items] |  |
Long-term Debt | $ 778,164 | $ 592,151
Long-term Debt, Gross | 795,015 | 605,394
Debt Issuance Costs, Noncurrent, Net | 16,851 | 13,243
Current maturities of long-term debt | 2,666 | 6,489
Long-term debt | 775,498 | 585,662
Revolving Credit Facility |  |
Line of Credit Facility [Line Items] |  |
Long-term Debt | 67,000 | 62,000
Senior Secured Credit Facilities |  |
Line of Credit Facility [Line Items] |  |
Current maturities of long-term debt |  | 5,400
Term Loan |  |
Line of Credit Facility [Line Items] |  |
Long-term Debt | 218,188 | 541,788
Notes Payable, Other Payables [Member] |  |
Line of Credit Facility [Line Items] |  |
Long-term Debt | 9,827 | 1,606
5.75% notes due May 15,2018 | Senior Notes |  |
Line of Credit Facility [Line Items] |  |
Long-term Debt | $ 500,000 | $ 0

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