Investments (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012
Schedule of net carrying value (amortized cost) and estimated fair value of debt securities
Due in one year or less, Amortized Cost	$ 2,804
Due after one year through three years, Amortized Cost
Due after three years, Amortized Cost	882
Total investments, Amortized Cost	3,686
Due in one year or less, Estimated Fair Value	2,804
Due after one year through three years, Estimated Fair Value
Due after three years, Estimated Fair Value	923
Total investments, Estimated Fair Value	$ 3,727

Amount of available-for-sale debt securities at cost, net of adjustments, which include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

+ References+ Details

Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the next fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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- Definition

Amount of debt securities categorized neither as held-to-maturity nor trading.

+ References

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