Debt

Debt consists of the following:



	December 31, 2013			December 31, 2012
Senior notes, at par	$	425,000		$	425,000
Unamortized premium on senior notes	6,052			7,823
Interest rate swap fair value	9,576			16,304
Senior notes	440,628			449,127
Revolving credit agreement	150,000			—
Mortgage notes payable	72,785			84,081
Capital leases and other	5,349			5,646
Total debt	668,762			538,854
Less current portion	(3,065		)	(3,373		)
Long term debt	$	665,697		$	535,481

Senior Notes

In May 2011, the Company issued $250,000 non-callable 5.75% Senior Notes due June 1, 2017 (the $250,000 Notes) at a discount to yield 6%. In connection with the May 2011 issuance, the Company entered into an interest rate swap for a notional amount of $250,000. Gains and losses due to changes in the fair value of the interest rate swap completely offset changes in the fair value of the hedged portion of the underlying debt and are recorded as an adjustment to the $250,000 Notes. At December 31, 2013, the fair value of the interest rate swap increased the fair value of the notes by $9,576 and the variable interest rate of the swap was 3.74%.

In November 2012, the Company issued an additional $175,000 non-callable 5.75% Senior Notes due June 1, 2017 ($175,000 Add-on Notes) at a premium to yield 4.29%. The indenture governing the $250,000 Notes and the $175,000 Add-on Notes contains non-financial and financial covenants, including requirements of a minimum fixed charge coverage ratio. Interest is paid semi-annually in June and December. At December 31, 2013, the total net unamortized debt premium on the $250,000 Notes and $175,000 Add-on Notes was $6,052.

Revolving Credit Agreement

In May 2013, the Company entered into a new unsecured $500,000 revolving credit facility and terminated its previous $350,000 revolving credit facility. Borrowings under the agreement bear interest based upon LIBOR rates, the Federal Funds Rate or the Prime Rate. The agreement has a maturity date of June 1, 2018, provided it will mature 90 days prior to the maturity date of the Company's 5.75% Senior Notes due 2017 if such notes are not refinanced (or extended) or certain financial conditions are not met, including carrying $100,000 of unrestricted cash on deposit. As of December 31, 2013, the Company had $150,000 of borrowings outstanding under the agreement with a weighted average interest rate of 3.31%.

The agreement contains non-financial and financial covenants, including requirements of minimum fixed charge coverage ratios, maximum debt-to-EBITDA ratios and minimum tangible net worth. The Company is required not to exceed a maximum debt-to-EBITDA ratio of 3.0 to 1.0. As of December 31, 2013, there were no limitations on the availability under the revolving credit agreement as a result of the debt-to-EBITDA ratio.

Mortgage Notes Payable

The Company has a non-recourse mortgage note of $72,785 at December 31, 2013 collateralized by its corporate headquarters building. The mortgage note is due January 1, 2021 and bears a 5.14% interest rate. The collateralized property had a net book value of $160,246 at December 31, 2013.

The Company also had a mortgage note of $8,700 at December 31, 2012 collateralized by another building and parking garage. In June 2013, the Company repaid this mortgage note.

Letters of Credit & Surety Bonds

The Company had outstanding letters of credit of $28,757 as of December 31, 2013, which were not part of the revolving credit facility. The letters of credit bore interest at 0.51% as of December 31, 2013. The Company had outstanding surety bonds of $102,568 as of December 31, 2013.

Aggregate maturities for the Company's debt are as follows:



2014	$	3,065
2015	3,188
2016	3,353
2017	428,525
2018	153,702
Thereafter	61,301
Total	$	653,134

The fair value of outstanding debt was approximately $672,529 and $543,611 at December 31, 2013 and 2012, respectively.