(10) In September 2011, the company issued $500 million of 3.375% Senior Notes (the “2011 Notes”) due September 15, 2021 and received proceeds of $492 million, net of underwriting discounts and debt issuance costs. Interest on the 2011 Notes is payable semi-annually on March 15 and September 15 of each year, and began on March 15, 2012. The company may, at any time, redeem the 2011 Notes at a redemption price equal to 100 percent of the principal amount, plus a “make whole” premium described in the indenture. Additionally, if a change of control triggering event occurs, as defined by the terms of the indenture, the company will be required to offer to purchase the 2011 Notes at a purchase price equal to 101 percent of their principal amount, plus accrued and unpaid interest, if any, to the date of purchase. The company is generally not limited under the indenture governing the 2011 Notes in its ability to incur additional indebtedness provided the company is in compliance with certain restrictive covenants, including restrictions on liens and restrictions on sale and leaseback transactions.

In February 2004, the company issued $330 million of 1.5% Convertible Senior Notes (the “2004 Notes”) due February 15, 2024 and received proceeds of $323 million, net of underwriting discounts. In December 2004, the company irrevocably elected to pay the principal amount of the 2004 Notes in cash. The 2004 Notes are convertible if a specified trading price of the company’s common stock (the “trigger price”) is achieved and maintained for a specified period. The trigger price condition was satisfied during the fourth quarter of 2012 and third quarter of 2013 and the 2004 Notes were therefore classified as short-term debt as of December 31, 2012 and September 30, 2013. During the nine months ended September 30, 2013, holders converted less than $0.1 million of the 2004 Notes in exchange for the principal balance owed in cash plus 1,562 shares of the company’s common stock. During the nine months ended September 30, 2012, holders converted $0.9 million of the 2004 Notes in exchange for the principal balance owed in cash plus 17,352 shares of the company’s common stock.

The following table presents information related to the liability and equity components of the 2004 Notes:

	September 30,		December 31,
(in thousands)	2013		2012

Carrying value of the equity component	$	19,519	$	19,519
Principal amount and carrying value of the liability component	18,398		18,472

The 2004 Notes are convertible into shares of the company’s common stock (par value $0.01 per share) at a conversion rate of 36.6729 shares per each $1,000 principal amount of the 2004 Notes. Interest expense for the three and nine month periods included original coupon interest of $0.1 million and $0.2 million, respectively, during both 2013 and 2012. The if-converted value of $48 million was in excess of the principal value as of September 30, 2013.

In the first quarter of 2013, the company redeemed its 5.625% Municipal Bonds at a price of 100% of their principal amount and paid off the remaining balances of various notes payable that were assumed in connection with the 2012 acquisition of an equipment company.

During the third quarter of 2013, the company borrowed $7 million under a short-term credit facility to purchase land and construction equipment associated with the equipment operations in the Global Services segment.

As of September 30, 2013, the company was in compliance with all of the financial covenants related to its debt agreements.