Cash and Cash Equivalents and Investments (Details 3) (USD $) In Thousands	Sep. 30, 2011
Debt securities:
Due in one year or less	$ 1,160
Due after one year through five years	0
Due in more than five years	50,469
Total debt securities	$ 51,629

For an unclassified balance sheet, total of debt securities categorized neither as held-to-maturity nor trading.

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+ Details