NOTES PAYABLE	3 Months Ended
Mar. 31, 2013
Notes Payable [Abstract]
NOTES PAYABLE	10. 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 is $1.7 million at March 31, 2013 and 2012, collateralized by $2.1 million of auction rate securities at cost. Interest expense was $4 and $6 for the three months ended March 31, 2013 and 2012, respectively. Management believes the carrying value of the note payable approximates its fair value for these borrowings and would be classified as a Level 2 measurement due to use of valuation inputs based on similar liabilities in the market.

10. 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 is $1.7 million at March 31, 2013 and 2012, collateralized by $2.1 million of auction rate securities at cost. Interest expense was $4 and $6 for the three months ended March 31, 2013 and 2012, respectively.

Management believes the carrying value of the note payable approximates its fair value for these borrowings and would be classified as a Level 2 measurement due to use of valuation inputs based on similar liabilities in the market.