In October 2006, the Company issued and sold Notes with an aggregate principal amount of $230 million due 2026, which pay 2.25% interest per annum on the principal amount of the Notes, payable semi-annually in arrears on April 1 and October 1 of each year.

On September 30, 2011, in accordance with the Indenture, dated as of October 12, 2006, between the Company, as issuer, and Union Bank, N.A. (formerly, Union Bank of California, N.A.), as trustee and paying agent (the “Paying Agent”), substantially all of the note holders surrendered their Notes for purchase (the “Put Option”). The Company was advised by the Paying Agent that Notes in an aggregate principal amount of approximately $134 million were validly surrendered. The Company has accepted for purchase all of these Notes for a purchase price of $1,000 in cash per $1,000 principal amount, plus accrued and unpaid interest to, but excluding, October 1, 2011, the purchase date for the Put Option. The Company has delivered the aggregate purchase price of approximately $136 million for the accepted Notes, which includes accrued and unpaid interest, to the Paying Agent for distribution to the note holders. Following the Company's purchase of the Notes pursuant to the Put Option, approximately $0.2 million in aggregate principal amount of the Notes remains outstanding. The Company has the option to call the remaining Notes, which it intends to do during the fourth quarter of 2011.

In determining the original liability and equity components, the Company determined the expected life of the Notes to be five years as that was the earliest date in which the Notes could be put back to the Company at par value. As of September 30, 2011, the discount of the liability was fully amortized. As of September 30, 2011, the liability and equity components are as follows (in thousands):

	Liability Component Principal Amount			Liability Component Net Carrying Amount			Liability Component Unamortized Discount			Equity Component Carrying Amount
$	236		$	236		$	0		$	35,515

The effective interest rate of the liability component was 8.5%, which was a comparable yield for nonconvertible notes with terms and conditions otherwise comparable to the Company's Notes as of the date of issuance. The amount of interest expense, including amortization of debt discount for the liability component and debt issuance costs is as follows (in thousands):

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2011		2010		2011		2010
Notes contractual interest expense	$	755	$	769	$	2,266	$	2,321
Amortization of debt discount		2,021		2,006		6,032		5,713
Amortization of debt issuance costs		137		138		412		412
Total	$	2,913	$	2,913	$	8,710	$	8,446