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Debt And Credit Agreements (Tables) | 12 Months Ended
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Dec. 31, 2016
Debt Disclosure [Abstract] |
Schedule Of Borrowings Under Credit Agreement At Various Indebtedness To Adjusted EBITDA Levels |
Summary Of Total Debt Due And Outstanding | At December 31, 2016, based upon the most restrictive covenants within the Credit Agreement, available credit under the Credit Agreement was approximately $185.0 million. Total debt due and outstanding at December 31, 2016 is summarized below:
Debt Due and Outstanding at December 31, 2016 (In Thousands)
Year Due | Credit Agreement |  | Other |  | Total Debt Due
2017 | $ | — |  |  | $ | — |  |  | $ | — |
2018 | — |  |  | — |  |  | — |
2019 | — |  |  | — |  |  | — |
2020 | — |  |  | — |  |  | — |
2021 | 95,000 |  |  | — |  |  | 95,000 |
Total | $ | 95,000 |  |  | $ | — |  |  | $ | 95,000 |

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- Definition Schedule Of Borrowings Under Credit Agreement At Various Indebtedness To Adjusted Ebitda Levels [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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