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Fair Values of Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2012
Estimated Fair Value of Outstanding Debt Balances | The estimated fair value of the Company’s outstanding debt balances (including current portion) as of December 31, 2012 and 2011 is set forth below (in thousands):
|  | December 31, 2012 |  |  | December 31, 2011 |
|  | Carrying Value |  |  | Fair Value |  |  | Carrying Value |  |  | Fair Value |
Borrowings under credit agreements: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving credit facilities |  | $ | — |  |  | $ | — |  |  | $ | 110,000 |  |  | $ | 110,000 |
Term loan facilities |  |  | 98,750 |  |  |  | 98,750 |  |  |  | 92,500 |  |  |  | 92,500 |
4.97% Series A Senior Notes |  |  | 300,000 |  |  |  | 329,281 |  |  |  | 300,000 |  |  |  | 315,942 |
4.27% Series B Senior Notes |  |  | 300,000 |  |  |  | 310,591 |  |  |  | — |  |  |  | — |
Total debt |  | $ | 698,750 |  |  | $ | 738,622 |  |  | $ | 502,500 |  |  | $ | 518,442 |

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- Definition Carrying Value and Fair Value of Financial Instruments Disclosure + References No definition available. + Details
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