5. Long-Term Debt

Long-term debt as of September 30, 2013 and December 31, 2012 consisted of the following (in thousands):



	September 30, 2013			December 31, 2012
Senior debt:
Revolving credit facility	$	33,000		$	—
Term loan	172,813			161,500
Total debt	205,813			161,500
Less: Current maturities	(9,844		)	(17,000		)
Total long-term debt, net of current maturities	$	195,969		$	144,500

On August 3, 2012, the Company entered into a third amended and restated credit agreement with U.S. Bank National Association (“U.S. Bank”) and other lenders, which increased the revolving credit facility from $100.0 million to $125.0 million and the term loan from $140.0 million to $170.0 million. On August 9, 2013, the Company entered into a fourth amended and restated credit agreement (the "credit agreement") with U.S. Bank and other lenders, which increased the revolving credit facility to $200.0 million and the term loan to $175.0 million. The credit facility matures on August 9, 2018. Principal on the term loan is due in quarterly installments of $2.2 million per quarter through June 30, 2014. As of September 30, 2014, quarterly principal payments on the term loan increase to $3.3 million through June 30, 2016 and increase to $4.4 million beginning September 30, 2016 through June 30, 2018. Any remaining outstanding balance under the credit agreement is due August 9, 2018. The Company categorizes the borrowings under the credit agreement as Level 2 in the fair value hierarchy as defined in Note 4. The carrying value of the Company's long-term debt approximates fair value as the debt agreement bears interest based on prevailing variable market rates currently available. The credit agreement is collateralized by all assets of the Company and contains certain financial covenants, including a minimum fixed charge coverage ratio and a maximum cash flow leverage ratio. Additionally, the credit agreement contains negative covenants limiting, among other things, additional indebtedness, capital expenditures, transactions with affiliates, additional liens, sales of assets, dividends, investments, advances, prepayments of debt, mergers and acquisitions, and other matters customarily restricted in such agreements. As of and at all times during the three and nine months ended September 30, 2013, the Company was in compliance with all covenants contained in the credit agreement. Borrowings under the credit agreement bear interest at either (a) the Eurocurrency Rate (as defined in the credit agreement), plus an applicable margin in the range of 2.0% to 3.3%, or (b) the Base Rate (as defined in the credit agreement), plus an applicable margin in the range of 1.0% to 2.3%. The revolving credit facility also provides for the issuance of up to $30.0 million in letters of credit. As of September 30, 2013, the Company had outstanding letters of credit totaling $10.8 million. Total availability under the revolving credit facility was $156.2 million as of September 30, 2013. As of September 30, 2013, the average interest rate on the credit agreement was 3.0%.