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NOTES PAYABLE	12 Months Ended
Dec. 31, 2012
Notes Payable [Abstract]
NOTES PAYABLE	8. NOTES PAYABLE In October 2008, we entered into a margin loan agreement with a 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 was $1.7 million at December 31, 2012 and 2011, collateralized by $2.1 million of auction rate securities at cost. Interest expense was $26, $25 and $274 for the years ended December 31, 2012, 2011 and 2010, respectively.

NOTES PAYABLE

12 Months Ended

Dec. 31, 2012

8. NOTES PAYABLE

In October 2008, we entered into a margin loan agreement with a 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 was $1.7 million at December 31, 2012 and 2011, collateralized by $2.1 million of auction rate securities at cost.

Interest expense was $26, $25 and $274 for the years ended December 31, 2012, 2011 and 2010, respectively.