Debt (Tables)

6 Months Ended

Jun. 30, 2013

Debt Disclosure [Abstract]

Debt outstanding

Debt outstanding was comprised of the following:

	June 30, 2013		December 31, 2012
5.125% senior, unsecured notes due October 1, 2014, net of discount(1)	$	255,793	$	256,770
7.0% senior notes due March 15, 2019	200,000		200,000
6.0% senior notes due November 15, 2020(2)	185,553		195,811
Long-term portion of capital lease obligations	821		—
Long-term portion of debt	642,167		652,581
Capital lease obligations due within one year	277		—
Total debt	$	642,444	$	652,581

⁽¹⁾ Includes increase due to cumulative change in fair value of hedged debt of $2,364 as of June 30, 2013 and $3,370 as of December 31, 2012.

⁽²⁾ Includes decrease due to cumulative change in fair value of hedged debt of $14,447 as of June 30, 2013 and $4,189 as of December 31, 2012.

Credit facility, amounts available for borrowing

As of June 30, 2013, amounts were available for borrowing under our credit facility as follows:

	Total available
Credit facility commitment	$	200,000
Outstanding letters of credit(1)	(7,965		)
Net available for borrowing as of June 30, 2013	$	192,035

⁽¹⁾ We use standby letters of credit primarily to collateralize certain obligations related to our self-insured workers’ compensation claims. These letters of credit reduce the amount available for borrowing under our credit facility.