Long-Term Debt

Long-term debt consists of:



	February 28,		May 31,
In thousands	2013		2012
Senior secured revolving credit facility expiring in 2016	$	—	$	—
9.25% Senior notes due 2020 issued August 10, 2010 at par value	650,000		650,000
Other	7,879		5,778
	657,879		655,778
Capital lease obligations	2,084		2,136
Other contract obligations	245		249
	660,208		658,163
Less current portion	1,816		1,214
	$	658,392	$	656,949

Senior Secured Revolving Credit Facility. On August 25, 2011, we amended and restated our credit agreement and the associated security agreement. The credit agreement continues to provide for a $200 million senior secured revolving credit facility with a $50 million sub-limit for letters of credit and a $15 million sub-limit for swing line loans. The credit facility matures on August 25, 2016. Amounts drawn under the credit facility bear annual interest either at the LIBOR rate plus a margin of 2.00% to 2.75% or at a base rate plus a margin of 1.0% to 1.75%. The base rate is the higher of the federal funds rate plus 0.5%, the prime rate established by Bank of America, N.A. or the one-month LIBOR rate plus 1.0%. The interest rate margins are determined based on the Company’s fixed charge coverage ratio. The commitment fee calculated on the unused portion of the credit facility ranges from 0.375% to 0.50% per year based on the Company’s average daily loan balance. We may terminate the credit facility at any time.

The amount that can be borrowed under the credit facility is limited to an amount called the borrowing base. The borrowing base may be less than the $200 million stated principal amount of the credit facility. The borrowing base is calculated based on the value of our accounts receivable, inventory and mobile equipment in which the lenders have a security interest. In addition, by mortgaging tracts of its real property to the lenders, the Company may increase the borrowing base by an amount beginning at $20 million and declining to $10.7 million at the maturity of the credit facility.

The borrowing base under the agreement was $148.1 million as of February 28, 2013. We are not required to maintain any financial ratios or covenants unless an event of default occurs or the unused portion of the borrowing base is less than $25 million, in which case we must maintain a fixed charge coverage ratio of at least 1.0 to 1.0. At February 28, 2013, our fixed charge coverage ratio was .48 to 1.0. Given this ratio, we may use only $123.1 million of the borrowing base as of such date. No borrowings were outstanding at February 28, 2013; however, $30.1 million of the borrowing base was used to support letters of credit. As a result, the maximum amount we could borrow as of February 28, 2103 was $93.0 million.

All of our consolidated subsidiaries have guaranteed our obligations under the credit facility. The credit facility is secured by first priority security interests in all or most of our existing and future consolidated accounts, inventory, equipment, intellectual property and other personal property, and in all of our equity interests in present and future domestic subsidiaries and 66% of the equity interest in any future foreign subsidiaries, if any.

The credit agreement contains a number of covenants restricting, among other things, prepayment or redemption of our senior notes, distributions and dividends on and repurchases of our capital stock, acquisitions and investments, indebtedness, liens and affiliate transactions. We are permitted to pay cash dividends on our common stock as long as the credit facility is not in default, the fixed charge coverage ratio is greater than 1.0 to 1.0 and borrowing availability under the borrowing base is more than $40 million. When our fixed charge coverage ratio is less than 1.0 to 1.0, we are permitted to pay cash dividends on our common stock not to exceed $2.5 million in any single instance (which shall not occur more than four times in any calendar year) or $10 million in the aggregate during any calendar year as long as the credit facility is not in default and borrowing availability is more than the greater of $60 million or 30% of the aggregate commitments of all lenders. For this purpose, borrowing availability is equal to the borrowing base less the amount of outstanding borrowings less the amount used to support letters of credit. We were in compliance with all of our loan covenants as of February 28, 2013.

9.25% Senior Notes. On August 10, 2010, we sold $650 million aggregate principal amount of our 9.25% senior notes due 2020 at an offering price of 100%. The notes were issued under an indenture dated as of August 10, 2010. The net proceeds were used to purchase or redeem all of our outstanding 7.25% senior notes due 2013, with additional proceeds available for general corporate purposes.

At February 28, 2013, we had $650 million aggregate principal amount of 9.25% senior notes outstanding. Under the indenture, at any time on or prior to August 15, 2015, we may redeem the notes at a redemption price equal to the sum of the principal amount thereof, plus accrued interest and a make-whole premium. On and after August 15, 2015, we may redeem all or a part of the notes at the redemption prices (expressed as percentages of principal amount) set forth below plus accrued and unpaid interest if redeemed during the twelve-month period beginning on August 15 of the years indicated below:



Year	Percentage
2015	104.625	%
2016	103.083	%
2017	101.542	%
2018 and thereafter	100.000	%

In addition, prior to August 15, 2013, we may redeem up to 35% of the aggregate principal amount of the notes at a redemption price equal to 109.250% of the principal amount thereof, plus accrued interest with the net cash proceeds from certain equity offerings. If we experience a change of control, we may be required to offer to purchase the notes at a purchase price equal to 101% of the principal amount, plus accrued interest.

All of our consolidated subsidiaries have unconditionally guaranteed the 9.25% senior notes. The indenture governing the notes contains affirmative and negative covenants that, among other things, limit our and our subsidiaries’ ability to pay dividends on or redeem or repurchase stock, make certain investments, incur additional debt or sell preferred stock, create liens, restrict dividend payments or other payments from subsidiaries to the Company, engage in consolidations and mergers or sell or transfer assets, engage in sale and leaseback transactions, engage in transactions with affiliates, and sell stock in our subsidiaries. We are not required to maintain any affirmative financial ratios or covenants. We were in compliance with all of our covenants as of February 28, 2013.

Other. Principal payments due on long-term debt, excluding capital lease and other contract obligations, during each of the five years subsequent to February 28, 2013 are $1.8 million, $1.9 million, $1.9 million, $1.9 million and $0.8 million. The total amount of interest incurred was $17.4 million and $17.0 million in the three-month periods ended February 28, 2013 and February 29, 2012, respectively, of which $10.2 million and $8.5 million was capitalized. The total amount of interest incurred was $51.9 million and $51.4 million in the nine-month periods ended February 28, 2013 and February 29, 2012, respectively, of which $29.4 million and $24.6 million was capitalized. The total amount of interest paid in cash was $66.0 million and $66.0 million in the nine-month periods ended February 28, 2013 and February 29, 2012, respectively.

Guarantee of Joint Venture Debt. We have guaranteed 50%, or $10.5 million, of an unconsolidated joint venture’s debt which matures November 18, 2013. The joint venture was in compliance with all the terms of the debt as of February 28, 2013. See further discussion of the joint venture under Investment in Joint Venture in note 1.