Debt

9 Months Ended

Sep. 30, 2011

Debt [Abstract]

Debt

6. Debt

We are a party to a Second Amended and Restated Credit Agreement dated as of January 11, 2010, as amended (the "Credit Agreement"), to borrow up to $150,000 under two revolving credit facilities: one in the maximum principal amount of $50,000; and the other in the maximum principal amount of $100,000. The Credit Agreement was amended as of June 27, 2011 to:

• extend the maturity date;

• decrease the margin applicable to the interest rate that is based on the London Interbank Offered Rate ("LIBOR") and adjusted for any reserve percentage obligations under the Federal Reserve System regulations; and

• decrease the facility fee.

We can borrow under each credit facility on either a secured or unsecured basis at our election, except if an event that would be a default under the Credit Agreement has occurred and is continuing, we may not elect to borrow on an unsecured basis. Both revolving credit facilities under the Credit Agreement mature on July 1, 2014.

Borrowings under the Credit Agreement bear interest, at our option, at the LIBOR plus an applicable margin or at an alternative base rate, as defined under the Credit Agreement. As of September 30, 2011, we pay a facility fee equal to 0.25% per annum on the daily amount of the commitment (whether used or unused) under the Credit Agreement. As of September 30, 2011, the borrowings under the Credit Agreement were $150,000, all of which were secured and bore interest at a rate of 0.68% per annum. Approximately $157,950 of our investments and cash equivalents served as collateral for the secured borrowings as of September 30, 2011.

The following table sets forth the interest expense (including the facility fee) that we recognized on our borrowings under the Credit Agreement and under the prior credit agreement that was replaced by the Credit Agreement in the periods indicated:

Three Months Ended September 30,				Nine Months Ended September 30,
2011		2010		2011		2010
$	378	$	490	$	1,442	$	1,424