4.	Long-Term Debt

	September 30,			December 31,			September 30,
	2016			2015			2015
	(Dollars in Thousands)
6.6% Senior Notes, due 2018	$	299,388		$	299,113		$	299,020
7% Debentures, due 2025		124,068			124,002			123,981
6.25% Senior Notes, due 2037		227,961			227,917			227,907
4.25 % Senior Notes, due 2024		395,115			394,690			394,575
Floating Rate Notes, due 2017, interest rate of 1.94%, 1.71% and 1.38% at September 30, 2016, December 31, 2015 and September 30, 2015, respectively		298,750			298,868			298,731
Term Loan Facility, due 2018, interest rate of 1.90%, 1.86% and 1.72% at September 30, 2016, December 31, 2015 and September 30, 2015, respectively		209,096			222,521			225,433
Trade Receivable Facility, interest rate of 1.22% and 0.90% at September 30, 2016 and September 30, 2015, respectively		210,000			—			130,000
Other notes		457			1,663			1,124
Total debt		1,764,835			1,568,774			1,700,771
Less: Current maturities		(228,025	)		(18,713	)		(147,003	)
Long-term debt	$	1,536,810		$	1,550,061		$	1,553,768

4.	Long-Term Debt (continued)

On September 28, 2016, the Corporation, through a wholly-owned special-purpose subsidiary, amended its trade receivable securitization facility (the “Trade Receivable Facility”) to increase the borrowing capacity from $250,000,000 to $300,000,000 and extend the maturity to September 27, 2017. The Trade Receivable Facility, with SunTrust Bank, Regions Bank, PNC Bank, N.A., The Bank of Tokyo-Mitsubishi UFJ, LTD., New York Branch, and certain other lenders that may become a party to the facility from time to time, is backed by eligible trade receivables, as defined. Borrowings are limited to the lesser of the facility limit or the borrowing base, as defined, of $420,044,000, $282,258,000 and $425,733,000 at September 30, 2016, December 31, 2015 and September 30, 2015, respectively. These receivables are originated by the Corporation and then sold or contributed to the wholly-owned special-purpose subsidiary by the Corporation. The Corporation continues to be responsible for the servicing and administration of the receivables purchased by the wholly-owned special-purpose subsidiary. Borrowings under the Trade Receivable Facility bear interest at a rate equal to one-month LIBOR plus 0.725%, subject to change in the event that this rate no longer reflects the lender’s cost of lending. The Trade Receivable Facility contains a cross-default provision to the Corporation’s other debt agreements.

The Corporation’s Credit Agreement, which provides a $250,000,000 (original amount) senior unsecured term loan (the “Term Loan Facility”) and a $350,000,000 five-year senior unsecured revolving facility (the “Revolving Facility”), requires the Corporation’s ratio of consolidated debt to consolidated earnings before interest, taxes, depreciation, depletion and amortization (“EBITDA”), as defined by the Credit Agreement, for the trailing-twelve months (the “Ratio”) to not exceed 3.50x as of the end of any fiscal quarter, provided that the Corporation may exclude from the Ratio debt incurred in connection with certain acquisitions for a period of 180 days so long as the Corporation, as a consequence of such specified acquisition, does not have its rating on long-term unsecured debt fall below BBB by Standard & Poor’s or Baa2 by Moody’s and the Ratio calculated without such exclusion does not exceed 3.75x. Additionally, if no amounts are outstanding under both the Revolving Facility and the Trade Receivable Facility, consolidated debt, including debt for which the Corporation is a co-borrower, may be reduced by the Corporation’s unrestricted cash and cash equivalents in excess of $50,000,000, such reduction not to exceed $200,000,000, for purposes of the covenant calculation.

In accordance with the amended Credit Agreement, the Corporation adjusted consolidated EBITDA to add back any integration or similar costs or expenses related to the TXI business combination incurred in any period prior to the second anniversary of the closing of the TXI business combination, not to exceed $70,000,000. The Corporation was in compliance with the Ratio at September 30, 2016.

Available borrowings under the Revolving Facility are reduced by any outstanding letters of credit issued by the Corporation under the Revolving Facility. At September 30, 2016, December 31, 2015 and September 30, 2015, the Corporation had $2,507,000 of outstanding letters of credit issued under the Revolving Facility.

Current debt maturities consist of borrowings under the Trade Receivable Facility and the current portions of the Term Loan Facility and other notes. The Floating Rate Notes have been classified as a noncurrent liability as the Corporation has the intent and ability to refinance on a long-term basis before or at its maturity of June 30, 2017.

Accumulated other comprehensive loss includes the unamortized value of terminated forward starting interest rate swap agreements. For the three and nine months ended September 30, 2016, the Corporation recognized $344,000 and $1,016,000, respectively, as additional interest expense. For the three and nine months ended September 30, 2015, the Corporation recognized $318,000 and $942,000, respectively, as additional interest expense. The ongoing amortization of the terminated value of the forward starting interest rate swap agreements will increase annual interest expense by approximately $1,400,000 until the maturity of the 6.6% Senior Notes in 2018.