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Debt (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012
Short-term debt: |  |
Bank Credit Facility | $ 38,000 | $ 38,000
Long-term debt: |  |
Final Maturity | 2015 |
Long-term debt | 199,874 | 199,809
Total | 237,874 | 237,809
Senior Notes 2015 [Member] |  |
Long-term debt: |  |
Effective Interest Rates | 6.10% |
Final Maturity | 2015 |
Long-term debt | 74,962 | 74,935
Senior Notes 2016 [Member] |  |
Long-term debt: |  |
Effective Interest Rates | 6.90% |
Final Maturity | 2016 |
Long-term debt | $ 124,912 | $ 124,874

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