Notes Payable

At December 31, 2011 and 2010, we had two lines of credit with commercial banks with an aggregate borrowing capacity of $225 million. Our note payable balance, which approximates fair value, was $104 million at year-end 2011 and $49 million at year-end 2010. The $150 million line of credit with a $104 million balance expires July of 2012. The $75 million line of credit expires August of 2012. We had no compensating balance requirements on short-term debt for either 2011 or 2010. The interest rate charged on our borrowings on these lines of credit ranged from 0.58 percent to 2.58 percent during 2011.