5. Long-Term Debt

Long-term debt as of September 30, 2015 and December 31, 2014 consisted of the following (in thousands):



	September 30, 2015			December 31, 2014
Senior debt:
Revolving credit facility	$	158,000		$	235,000
Term loan	300,000			195,000
Total debt	458,000			430,000
Less: Current maturities	(15,000		)	(10,000		)
Total long-term debt, net of current maturities	$	443,000		$	420,000

On September 24, 2015, the Company entered into a sixth amended and restated credit agreement (the "credit agreement") with U.S. Bank National Association and other lenders, which increased the revolving credit facility from $350.0 million to $400.0 million and the term loan from $200.0 million to $300.0 million. The credit facility matures on July 9, 2019. Principal on the term loan is due in quarterly installments of $3.8 million. The Company categorizes the borrowings under the credit agreement as Level 2 in the fair value hierarchy described 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. The current debt agreement prohibits the Company from paying dividends without the consent of the lenders. 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 3.25%, or (b) the Base Rate (as defined in the credit agreement), plus an applicable margin in the range of 1.0% to 2.25%. The revolving credit facility also provides for the issuance of up to $40.0 million in letters of credit. As of September 30, 2015, the Company had outstanding letters of credit totaling $20.5 million. As of September 30, 2015, total availability under the revolving credit facility was $221.5 million and the average interest rate on the credit agreement was 3.5%.