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Interest Rate Swap Agreements (Tables) | 6 Months Ended
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Jun. 30, 2012
Interest Rate Swap Agreements [Abstract] |
Interest rate swap agreements designated as hedge agreements |
Amount Designated as a Hedge |  | Nominal Amount |  |  | Effective Date |  | Pay Rate |  | Receive Rate |  | Expiration Date |  | Current Liability (1) |  |  | Long- Term Liability (2) |  |  | Estimated Total Fair Value at June 30, 2012 |
$106,632 (3) |  | $ | 125,000 |  |  | August 2007 |  | 4.9220% |  | 3-Month LIBOR |  | August 2012 |  | $ | 680 |  |  | $ | — |  |  | $ | 680 |
$63,983 (4) |  | $ | 75,000 |  |  | November 2008 |  | 3.6300% |  | 1-Month LIBOR |  | November 2012 |  |  | 960 |  |  |  | — |  |  |  | 960 |
$175,000 |  | $ | 175,000 |  |  | December 2010 |  | 1.3975% |  | 1-Month LIBOR |  | September 2015 |  |  | 1,823 |  |  |  | 3,198 |  |  |  | 5,021 |
$175,000 |  | $ | 175,000 |  |  | December 2010 |  | 1.4000% |  | 1-Month LIBOR |  | September 2015 |  |  | 1,845 |  |  |  | 3,233 |  |  |  | 5,078 |
$100,000 |  | $ | 100,000 |  |  | November 2011 |  | 1.7150% |  | 1-Month LIBOR |  | April 2016 |  |  | 1,475 |  |  |  | 2,775 |  |  |  | 4,250 |
$620,615 |  | $ | 650,000 |  |  |  |  |  |  |  |  |  |  | $ | 6,783 |  |  | $ | 9,206 |  |  | $ | 15,989 |
(1) | Included in accounts payable and accrued expenses on the condensed consolidated balance sheet as of June 30, 2012.
(2) | Included in other long-term liabilities on the condensed consolidated balance sheet as of June 30, 2012.
(3) | An additional $18,368 of this original $125,000 swap is no longer designated as a hedge as a result of the prepayment of the unextended portion of the Company’s term loan debt.
(4) | An additional $11,017 of this original $75,000 swap is no longer designated as a hedge as a result of the prepayment of the unextended portion of the Company’s term loan debt.

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- Definition Tabular disclosure of interest rate derivatives, including, but not limited to, the fair value of the derivatives, statement of financial position location, and statement of financial performance location of these instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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