Debt Security Investments (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Amortized cost and fair value of debt security investments, by contractual maturity
Due in one year or less, Amortized Cost	$ 55,092
Due in one year or less, Fair Value	55,070
Due after one year through five years, Amortized Cost	28,400
Due after one year through five years, Fair Value	28,377
Total securities held to maturity, Amortized Cost	83,492
Total securities held to maturity, Fair Value	$ 83,447

Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the second fiscal year through the fifth 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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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

This item represents the aggregate fair value of investments in debt securities as of the balance sheet date and which are categorized as held-to-maturity.

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