NOTES PAYABLE	6 Months Ended
Jun. 30, 2011
Notes Payable Note [Abstract]
NOTES PAYABLE	11. NOTES PAYABLE On July 8, 2008, we entered into a collateralized, revolving credit line agreement for up to $47.5 million with UBS Bank USA, secured by a first priority lien and security interest in the auction rate securities held by us in an account with UBS Financial Services Inc. On June 30, 2010, the company exercised its UBS auction rate put option and in July 2010, UBS AG redeemed at par value all of the Company’s auction rate securities held by them that were outstanding at June 30, 2010. The Company used a portion of the 2010 redemptions to retire the notes payable to UBS AG and the credit line at UBS AG was cancelled in July 2010. In October 2008, we entered into a margin loan agreement with another financial institution collateralized by $2.9 million of our auction rate securities and borrowed $1.7 million which is the maximum amount allowed under this facility. The amount outstanding under this facility of $1.7 million at June 30, 2011 is due on demand and is collateralized by $2.3 million of auction rate securities. Interest expense was $6 and $12 for the three and six months ended June 30, 2011, respectively. Interest expense was $133 and $255 for the three and six months ended June 30, 2010, respectively.

11. NOTES PAYABLE

On July 8, 2008, we entered into a collateralized, revolving credit line agreement for up to $47.5 million with UBS Bank USA, secured by a first priority lien and security interest in the auction rate securities held by us in an account with UBS Financial Services Inc. On June 30, 2010, the company exercised its UBS auction rate put option and in July 2010, UBS AG redeemed at par value all of the Company’s auction rate securities held by them that were outstanding at June 30, 2010. The Company used a portion of the 2010 redemptions to retire the notes payable to UBS AG and the credit line at UBS AG was cancelled in July 2010.

In October 2008, we entered into a margin loan agreement with another financial institution collateralized by $2.9 million of our auction rate securities and borrowed $1.7 million which is the maximum amount allowed under this facility. The amount outstanding under this facility of $1.7 million at June 30, 2011 is due on demand and is collateralized by $2.3 million of auction rate securities.

Interest expense was $6 and $12 for the three and six months ended June 30, 2011, respectively. Interest expense was $133 and $255 for the three and six months ended June 30, 2010, respectively.