Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Changes in Level 3 Securities) (Details)

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Fair Value Measurements (Changes in Level 3 Securities) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2012
Mar. 31, 2011
Changes in Level 3 Securities        
Beginning aggregate fair value of Level 3 securities $ 0 $ 0 $ 0 $ 16,825
Net settlements 0 0 0 (16,825)
Ending aggregate fair value of Level 3 securities $ 0 $ 0 $ 0 $ 0